1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/bio.h> 33 #include <sys/kernel.h> 34 #include <sys/lock.h> 35 #include <sys/module.h> 36 #include <sys/mutex.h> 37 #include <sys/sx.h> 38 39 #include <sys/bus.h> 40 #include <sys/conf.h> 41 42 #include <machine/bus.h> 43 #include <machine/resource.h> 44 #include <sys/rman.h> 45 46 #include <geom/geom_disk.h> 47 48 #include <dev/pci/pcireg.h> 49 #include <dev/pci/pcivar.h> 50 51 #include <dev/mlx/mlxio.h> 52 #include <dev/mlx/mlxvar.h> 53 #include <dev/mlx/mlxreg.h> 54 55 static int mlx_pci_probe(device_t dev); 56 static int mlx_pci_attach(device_t dev); 57 58 static device_method_t mlx_methods[] = { 59 /* Device interface */ 60 DEVMETHOD(device_probe, mlx_pci_probe), 61 DEVMETHOD(device_attach, mlx_pci_attach), 62 DEVMETHOD(device_detach, mlx_detach), 63 DEVMETHOD(device_shutdown, mlx_shutdown), 64 DEVMETHOD(device_suspend, mlx_suspend), 65 DEVMETHOD(device_resume, mlx_resume), 66 67 DEVMETHOD_END 68 }; 69 70 static driver_t mlx_pci_driver = { 71 "mlx", 72 mlx_methods, 73 sizeof(struct mlx_softc) 74 }; 75 76 DRIVER_MODULE(mlx, pci, mlx_pci_driver, 0, 0); 77 78 struct mlx_ident 79 { 80 u_int16_t vendor; 81 u_int16_t device; 82 u_int16_t subvendor; 83 u_int16_t subdevice; 84 int iftype; 85 char *desc; 86 } mlx_identifiers[] = { 87 {0x1069, 0x0001, 0x0000, 0x0000, MLX_IFTYPE_2, "Mylex version 2 RAID interface"}, 88 {0x1069, 0x0002, 0x0000, 0x0000, MLX_IFTYPE_3, "Mylex version 3 RAID interface"}, 89 {0x1069, 0x0010, 0x0000, 0x0000, MLX_IFTYPE_4, "Mylex version 4 RAID interface"}, 90 {0x1011, 0x1065, 0x1069, 0x0020, MLX_IFTYPE_5, "Mylex version 5 RAID interface"}, 91 {0, 0, 0, 0, 0, 0} 92 }; 93 94 static struct mlx_ident * 95 mlx_pci_match(device_t dev) 96 { 97 struct mlx_ident *m; 98 99 for (m = mlx_identifiers; m->vendor != 0; m++) { 100 if ((m->vendor == pci_get_vendor(dev)) && 101 (m->device == pci_get_device(dev)) && 102 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) && 103 (m->subdevice == pci_get_subdevice(dev))))) 104 return (m); 105 } 106 return (NULL); 107 } 108 109 static int 110 mlx_pci_probe(device_t dev) 111 { 112 struct mlx_ident *m; 113 114 debug_called(1); 115 116 m = mlx_pci_match(dev); 117 if (m != NULL) { 118 device_set_desc(dev, m->desc); 119 return(BUS_PROBE_DEFAULT); 120 } 121 return(ENXIO); 122 } 123 124 static int 125 mlx_pci_attach(device_t dev) 126 { 127 struct mlx_softc *sc; 128 struct mlx_ident *m; 129 int error; 130 131 debug_called(1); 132 133 pci_enable_busmaster(dev); 134 135 sc = device_get_softc(dev); 136 sc->mlx_dev = dev; 137 138 /* 139 * Work out what sort of adapter this is (we need to know this in order 140 * to map the appropriate interface resources). 141 */ 142 m = mlx_pci_match(dev); 143 if (m == NULL) /* shouldn't happen */ 144 return(ENXIO); 145 sc->mlx_iftype = m->iftype; 146 147 mtx_init(&sc->mlx_io_lock, "mlx I/O", NULL, MTX_DEF); 148 sx_init(&sc->mlx_config_lock, "mlx config"); 149 callout_init_mtx(&sc->mlx_timeout, &sc->mlx_io_lock, 0); 150 151 /* 152 * Allocate the PCI register window. 153 */ 154 155 /* type 2/3 adapters have an I/O region we don't prefer at base 0 */ 156 switch(sc->mlx_iftype) { 157 case MLX_IFTYPE_2: 158 case MLX_IFTYPE_3: 159 sc->mlx_mem_type = SYS_RES_MEMORY; 160 sc->mlx_mem_rid = MLX_CFG_BASE1; 161 sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type, 162 &sc->mlx_mem_rid, RF_ACTIVE); 163 if (sc->mlx_mem == NULL) { 164 sc->mlx_mem_type = SYS_RES_IOPORT; 165 sc->mlx_mem_rid = MLX_CFG_BASE0; 166 sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type, 167 &sc->mlx_mem_rid, RF_ACTIVE); 168 } 169 break; 170 case MLX_IFTYPE_4: 171 case MLX_IFTYPE_5: 172 sc->mlx_mem_type = SYS_RES_MEMORY; 173 sc->mlx_mem_rid = MLX_CFG_BASE0; 174 sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type, 175 &sc->mlx_mem_rid, RF_ACTIVE); 176 break; 177 } 178 if (sc->mlx_mem == NULL) { 179 device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n"); 180 mlx_free(sc); 181 return(ENXIO); 182 } 183 184 /* 185 * Allocate the parent bus DMA tag appropriate for PCI. 186 */ 187 error = bus_dma_tag_create(bus_get_dma_tag(dev), /* PCI parent */ 188 1, 0, /* alignment, boundary */ 189 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 190 BUS_SPACE_MAXADDR, /* highaddr */ 191 NULL, NULL, /* filter, filterarg */ 192 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 193 BUS_SPACE_UNRESTRICTED, /* nsegments */ 194 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 195 BUS_DMA_ALLOCNOW, /* flags */ 196 NULL, /* lockfunc */ 197 NULL, /* lockarg */ 198 &sc->mlx_parent_dmat); 199 if (error != 0) { 200 device_printf(dev, "can't allocate parent DMA tag\n"); 201 mlx_free(sc); 202 return(ENOMEM); 203 } 204 205 /* 206 * Do bus-independent initialisation. 207 */ 208 error = mlx_attach(sc); 209 if (error != 0) { 210 mlx_free(sc); 211 return(error); 212 } 213 214 /* 215 * Start the controller. 216 */ 217 mlx_startup(sc); 218 return(0); 219 } 220