1 /*- 2 * Copyright (c) 1999 Michael Smith 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 * $FreeBSD: src/sys/dev/mlx/mlx_pci.c,v 1.4.2.5 2001/06/25 04:37:51 msmith Exp $ 27 * $DragonFly: src/sys/dev/raid/mlx/mlx_pci.c,v 1.4 2006/10/25 20:56:01 dillon Exp $ 28 */ 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/kernel.h> 33 #include <sys/bus.h> 34 #include <sys/conf.h> 35 #include <sys/devicestat.h> 36 #include <sys/disk.h> 37 #include <sys/rman.h> 38 39 #include <bus/pci/pcireg.h> 40 #include <bus/pci/pcivar.h> 41 42 #include "mlx_compat.h" 43 #include "mlxio.h" 44 #include "mlxvar.h" 45 #include "mlxreg.h" 46 47 static int mlx_pci_probe(device_t dev); 48 static int mlx_pci_attach(device_t dev); 49 50 static device_method_t mlx_methods[] = { 51 /* Device interface */ 52 DEVMETHOD(device_probe, mlx_pci_probe), 53 DEVMETHOD(device_attach, mlx_pci_attach), 54 DEVMETHOD(device_detach, mlx_detach), 55 DEVMETHOD(device_shutdown, mlx_shutdown), 56 DEVMETHOD(device_suspend, mlx_suspend), 57 DEVMETHOD(device_resume, mlx_resume), 58 59 DEVMETHOD(bus_print_child, bus_generic_print_child), 60 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 61 { 0, 0 } 62 }; 63 64 static driver_t mlx_pci_driver = { 65 "mlx", 66 mlx_methods, 67 sizeof(struct mlx_softc) 68 }; 69 70 DRIVER_MODULE(mlx, pci, mlx_pci_driver, mlx_devclass, 0, 0); 71 72 struct mlx_ident 73 { 74 u_int16_t vendor; 75 u_int16_t device; 76 u_int16_t subvendor; 77 u_int16_t subdevice; 78 int iftype; 79 char *desc; 80 } mlx_identifiers[] = { 81 {0x1069, 0x0001, 0x0000, 0x0000, MLX_IFTYPE_2, "Mylex version 2 RAID interface"}, 82 {0x1069, 0x0002, 0x0000, 0x0000, MLX_IFTYPE_3, "Mylex version 3 RAID interface"}, 83 {0x1069, 0x0010, 0x0000, 0x0000, MLX_IFTYPE_4, "Mylex version 4 RAID interface"}, 84 {0x1011, 0x1065, 0x1069, 0x0020, MLX_IFTYPE_5, "Mylex version 5 RAID interface"}, 85 {0, 0, 0, 0, 0, 0} 86 }; 87 88 static int 89 mlx_pci_probe(device_t dev) 90 { 91 struct mlx_ident *m; 92 93 debug_called(1); 94 95 for (m = mlx_identifiers; m->vendor != 0; m++) { 96 if ((m->vendor == pci_get_vendor(dev)) && 97 (m->device == pci_get_device(dev)) && 98 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) && 99 (m->subdevice == pci_get_subdevice(dev))))) { 100 101 device_set_desc(dev, m->desc); 102 return(-10); /* allow room to be overridden */ 103 } 104 } 105 return(ENXIO); 106 } 107 108 static int 109 mlx_pci_attach(device_t dev) 110 { 111 struct mlx_softc *sc; 112 int i, error; 113 u_int32_t command; 114 115 debug_called(1); 116 117 /* 118 * Make sure we are going to be able to talk to this board. 119 */ 120 command = pci_read_config(dev, PCIR_COMMAND, 2); 121 if ((command & PCIM_CMD_MEMEN) == 0) { 122 device_printf(dev, "memory window not available\n"); 123 return(ENXIO); 124 } 125 /* force the busmaster enable bit on */ 126 command |= PCIM_CMD_BUSMASTEREN; 127 pci_write_config(dev, PCIR_COMMAND, command, 2); 128 129 /* 130 * Initialise softc. 131 */ 132 sc = device_get_softc(dev); 133 bzero(sc, sizeof(*sc)); 134 sc->mlx_dev = dev; 135 136 /* 137 * Work out what sort of adapter this is (we need to know this in order 138 * to map the appropriate interface resources). 139 */ 140 sc->mlx_iftype = 0; 141 for (i = 0; mlx_identifiers[i].vendor != 0; i++) { 142 if ((mlx_identifiers[i].vendor == pci_get_vendor(dev)) && 143 (mlx_identifiers[i].device == pci_get_device(dev))) { 144 sc->mlx_iftype = mlx_identifiers[i].iftype; 145 break; 146 } 147 } 148 if (sc->mlx_iftype == 0) /* shouldn't happen */ 149 return(ENXIO); 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(dev, sc->mlx_mem_type, &sc->mlx_mem_rid, 0, ~0, 1, 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(dev, sc->mlx_mem_type, &sc->mlx_mem_rid, 0, ~0, 1, RF_ACTIVE); 166 } 167 break; 168 case MLX_IFTYPE_4: 169 case MLX_IFTYPE_5: 170 sc->mlx_mem_type = SYS_RES_MEMORY; 171 sc->mlx_mem_rid = MLX_CFG_BASE0; 172 sc->mlx_mem = bus_alloc_resource(dev, sc->mlx_mem_type, &sc->mlx_mem_rid, 0, ~0, 1, RF_ACTIVE); 173 break; 174 } 175 if (sc->mlx_mem == NULL) { 176 device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n"); 177 mlx_free(sc); 178 return(ENXIO); 179 } 180 sc->mlx_btag = rman_get_bustag(sc->mlx_mem); 181 sc->mlx_bhandle = rman_get_bushandle(sc->mlx_mem); 182 183 /* 184 * Allocate the parent bus DMA tag appropriate for PCI. 185 */ 186 error = bus_dma_tag_create(NULL, /* parent */ 187 1, 0, /* alignment, boundary */ 188 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 189 BUS_SPACE_MAXADDR, /* highaddr */ 190 NULL, NULL, /* filter, filterarg */ 191 MAXBSIZE, MLX_NSEG, /* maxsize, nsegments */ 192 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 193 BUS_DMA_ALLOCNOW, /* flags */ 194 &sc->mlx_parent_dmat); 195 if (error != 0) { 196 device_printf(dev, "can't allocate parent DMA tag\n"); 197 mlx_free(sc); 198 return(ENOMEM); 199 } 200 201 /* 202 * Do bus-independant initialisation. 203 */ 204 error = mlx_attach(sc); 205 if (error != 0) { 206 mlx_free(sc); 207 return(error); 208 } 209 210 /* 211 * Start the controller. 212 */ 213 mlx_startup(sc); 214 return(0); 215 } 216