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/param.h> 30 #include <sys/systm.h> 31 #include <sys/bio.h> 32 #include <sys/kernel.h> 33 #include <sys/lock.h> 34 #include <sys/module.h> 35 #include <sys/mutex.h> 36 #include <sys/sx.h> 37 38 #include <sys/bus.h> 39 #include <sys/conf.h> 40 41 #include <machine/bus.h> 42 #include <machine/resource.h> 43 #include <sys/rman.h> 44 45 #include <geom/geom_disk.h> 46 47 #include <dev/pci/pcireg.h> 48 #include <dev/pci/pcivar.h> 49 50 #include <dev/mlx/mlxio.h> 51 #include <dev/mlx/mlxvar.h> 52 #include <dev/mlx/mlxreg.h> 53 54 static int mlx_pci_probe(device_t dev); 55 static int mlx_pci_attach(device_t dev); 56 57 static device_method_t mlx_methods[] = { 58 /* Device interface */ 59 DEVMETHOD(device_probe, mlx_pci_probe), 60 DEVMETHOD(device_attach, mlx_pci_attach), 61 DEVMETHOD(device_detach, mlx_detach), 62 DEVMETHOD(device_shutdown, mlx_shutdown), 63 DEVMETHOD(device_suspend, mlx_suspend), 64 DEVMETHOD(device_resume, mlx_resume), 65 66 DEVMETHOD_END 67 }; 68 69 static driver_t mlx_pci_driver = { 70 "mlx", 71 mlx_methods, 72 sizeof(struct mlx_softc) 73 }; 74 75 DRIVER_MODULE(mlx, pci, mlx_pci_driver, 0, 0); 76 77 struct mlx_ident 78 { 79 u_int16_t vendor; 80 u_int16_t device; 81 u_int16_t subvendor; 82 u_int16_t subdevice; 83 int iftype; 84 char *desc; 85 } mlx_identifiers[] = { 86 {0x1069, 0x0001, 0x0000, 0x0000, MLX_IFTYPE_2, "Mylex version 2 RAID interface"}, 87 {0x1069, 0x0002, 0x0000, 0x0000, MLX_IFTYPE_3, "Mylex version 3 RAID interface"}, 88 {0x1069, 0x0010, 0x0000, 0x0000, MLX_IFTYPE_4, "Mylex version 4 RAID interface"}, 89 {0x1011, 0x1065, 0x1069, 0x0020, MLX_IFTYPE_5, "Mylex version 5 RAID interface"}, 90 {0, 0, 0, 0, 0, 0} 91 }; 92 93 static struct mlx_ident * 94 mlx_pci_match(device_t dev) 95 { 96 struct mlx_ident *m; 97 98 for (m = mlx_identifiers; m->vendor != 0; m++) { 99 if ((m->vendor == pci_get_vendor(dev)) && 100 (m->device == pci_get_device(dev)) && 101 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) && 102 (m->subdevice == pci_get_subdevice(dev))))) 103 return (m); 104 } 105 return (NULL); 106 } 107 108 static int 109 mlx_pci_probe(device_t dev) 110 { 111 struct mlx_ident *m; 112 113 debug_called(1); 114 115 m = mlx_pci_match(dev); 116 if (m != NULL) { 117 device_set_desc(dev, m->desc); 118 return(BUS_PROBE_DEFAULT); 119 } 120 return(ENXIO); 121 } 122 123 static int 124 mlx_pci_attach(device_t dev) 125 { 126 struct mlx_softc *sc; 127 struct mlx_ident *m; 128 int error; 129 130 debug_called(1); 131 132 pci_enable_busmaster(dev); 133 134 sc = device_get_softc(dev); 135 sc->mlx_dev = dev; 136 137 /* 138 * Work out what sort of adapter this is (we need to know this in order 139 * to map the appropriate interface resources). 140 */ 141 m = mlx_pci_match(dev); 142 if (m == NULL) /* shouldn't happen */ 143 return(ENXIO); 144 sc->mlx_iftype = m->iftype; 145 146 mtx_init(&sc->mlx_io_lock, "mlx I/O", NULL, MTX_DEF); 147 sx_init(&sc->mlx_config_lock, "mlx config"); 148 callout_init_mtx(&sc->mlx_timeout, &sc->mlx_io_lock, 0); 149 150 /* 151 * Allocate the PCI register window. 152 */ 153 154 /* type 2/3 adapters have an I/O region we don't prefer at base 0 */ 155 switch(sc->mlx_iftype) { 156 case MLX_IFTYPE_2: 157 case MLX_IFTYPE_3: 158 sc->mlx_mem_type = SYS_RES_MEMORY; 159 sc->mlx_mem_rid = MLX_CFG_BASE1; 160 sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type, 161 &sc->mlx_mem_rid, RF_ACTIVE); 162 if (sc->mlx_mem == NULL) { 163 sc->mlx_mem_type = SYS_RES_IOPORT; 164 sc->mlx_mem_rid = MLX_CFG_BASE0; 165 sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type, 166 &sc->mlx_mem_rid, RF_ACTIVE); 167 } 168 break; 169 case MLX_IFTYPE_4: 170 case MLX_IFTYPE_5: 171 sc->mlx_mem_type = SYS_RES_MEMORY; 172 sc->mlx_mem_rid = MLX_CFG_BASE0; 173 sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type, 174 &sc->mlx_mem_rid, RF_ACTIVE); 175 break; 176 } 177 if (sc->mlx_mem == NULL) { 178 device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n"); 179 mlx_free(sc); 180 return(ENXIO); 181 } 182 183 /* 184 * Allocate the parent bus DMA tag appropriate for PCI. 185 */ 186 error = bus_dma_tag_create(bus_get_dma_tag(dev), /* PCI parent */ 187 1, 0, /* alignment, boundary */ 188 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 189 BUS_SPACE_MAXADDR, /* highaddr */ 190 NULL, NULL, /* filter, filterarg */ 191 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 192 BUS_SPACE_UNRESTRICTED, /* nsegments */ 193 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 194 BUS_DMA_ALLOCNOW, /* flags */ 195 NULL, /* lockfunc */ 196 NULL, /* lockarg */ 197 &sc->mlx_parent_dmat); 198 if (error != 0) { 199 device_printf(dev, "can't allocate parent DMA tag\n"); 200 mlx_free(sc); 201 return(ENOMEM); 202 } 203 204 /* 205 * Do bus-independent initialisation. 206 */ 207 error = mlx_attach(sc); 208 if (error != 0) { 209 mlx_free(sc); 210 return(error); 211 } 212 213 /* 214 * Start the controller. 215 */ 216 mlx_startup(sc); 217 return(0); 218 } 219