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 */ 28 29 #include <sys/param.h> 30 #include <sys/systm.h> 31 #include <sys/kernel.h> 32 #include <sys/bus.h> 33 #include <sys/conf.h> 34 #include <sys/devicestat.h> 35 #include <sys/disk.h> 36 #include <sys/rman.h> 37 38 #include <bus/pci/pcireg.h> 39 #include <bus/pci/pcivar.h> 40 41 #include "mlx_compat.h" 42 #include "mlxio.h" 43 #include "mlxvar.h" 44 #include "mlxreg.h" 45 46 static int mlx_pci_probe(device_t dev); 47 static int mlx_pci_attach(device_t dev); 48 49 static device_method_t mlx_methods[] = { 50 /* Device interface */ 51 DEVMETHOD(device_probe, mlx_pci_probe), 52 DEVMETHOD(device_attach, mlx_pci_attach), 53 DEVMETHOD(device_detach, mlx_detach), 54 DEVMETHOD(device_shutdown, mlx_shutdown), 55 DEVMETHOD(device_suspend, mlx_suspend), 56 DEVMETHOD(device_resume, mlx_resume), 57 58 DEVMETHOD(bus_print_child, bus_generic_print_child), 59 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 60 DEVMETHOD_END 61 }; 62 63 static driver_t mlx_pci_driver = { 64 "mlx", 65 mlx_methods, 66 sizeof(struct mlx_softc) 67 }; 68 69 DRIVER_MODULE(mlx, pci, mlx_pci_driver, mlx_devclass, NULL, NULL); 70 71 struct mlx_ident 72 { 73 u_int16_t vendor; 74 u_int16_t device; 75 u_int16_t subvendor; 76 u_int16_t subdevice; 77 int iftype; 78 char *desc; 79 } mlx_identifiers[] = { 80 {0x1069, 0x0001, 0x0000, 0x0000, MLX_IFTYPE_2, "Mylex version 2 RAID interface"}, 81 {0x1069, 0x0002, 0x0000, 0x0000, MLX_IFTYPE_3, "Mylex version 3 RAID interface"}, 82 {0x1069, 0x0010, 0x0000, 0x0000, MLX_IFTYPE_4, "Mylex version 4 RAID interface"}, 83 {0x1011, 0x1065, 0x1069, 0x0020, MLX_IFTYPE_5, "Mylex version 5 RAID interface"}, 84 {0, 0, 0, 0, 0, 0} 85 }; 86 87 static int 88 mlx_pci_probe(device_t dev) 89 { 90 struct mlx_ident *m; 91 92 debug_called(1); 93 94 for (m = mlx_identifiers; m->vendor != 0; m++) { 95 if ((m->vendor == pci_get_vendor(dev)) && 96 (m->device == pci_get_device(dev)) && 97 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) && 98 (m->subdevice == pci_get_subdevice(dev))))) { 99 100 device_set_desc(dev, m->desc); 101 return(-10); /* allow room to be overridden */ 102 } 103 } 104 return(ENXIO); 105 } 106 107 static int 108 mlx_pci_attach(device_t dev) 109 { 110 struct mlx_softc *sc; 111 int i, error; 112 u_int32_t command; 113 114 debug_called(1); 115 116 /* 117 * Make sure we are going to be able to talk to this board. 118 */ 119 command = pci_read_config(dev, PCIR_COMMAND, 2); 120 if ((command & PCIM_CMD_MEMEN) == 0) { 121 device_printf(dev, "memory window not available\n"); 122 return(ENXIO); 123 } 124 /* force the busmaster enable bit on */ 125 command |= PCIM_CMD_BUSMASTEREN; 126 pci_write_config(dev, PCIR_COMMAND, command, 2); 127 128 /* 129 * Initialise softc. 130 */ 131 sc = device_get_softc(dev); 132 bzero(sc, sizeof(*sc)); 133 sc->mlx_dev = dev; 134 135 /* 136 * Work out what sort of adapter this is (we need to know this in order 137 * to map the appropriate interface resources). 138 */ 139 sc->mlx_iftype = 0; 140 for (i = 0; mlx_identifiers[i].vendor != 0; i++) { 141 if ((mlx_identifiers[i].vendor == pci_get_vendor(dev)) && 142 (mlx_identifiers[i].device == pci_get_device(dev))) { 143 sc->mlx_iftype = mlx_identifiers[i].iftype; 144 break; 145 } 146 } 147 if (sc->mlx_iftype == 0) /* shouldn't happen */ 148 return(ENXIO); 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(dev, sc->mlx_mem_type, &sc->mlx_mem_rid, 0, ~0, 1, RF_ACTIVE); 161 if (sc->mlx_mem == NULL) { 162 sc->mlx_mem_type = SYS_RES_IOPORT; 163 sc->mlx_mem_rid = MLX_CFG_BASE0; 164 sc->mlx_mem = bus_alloc_resource(dev, sc->mlx_mem_type, &sc->mlx_mem_rid, 0, ~0, 1, RF_ACTIVE); 165 } 166 break; 167 case MLX_IFTYPE_4: 168 case MLX_IFTYPE_5: 169 sc->mlx_mem_type = SYS_RES_MEMORY; 170 sc->mlx_mem_rid = MLX_CFG_BASE0; 171 sc->mlx_mem = bus_alloc_resource(dev, sc->mlx_mem_type, &sc->mlx_mem_rid, 0, ~0, 1, RF_ACTIVE); 172 break; 173 } 174 if (sc->mlx_mem == NULL) { 175 device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n"); 176 mlx_free(sc); 177 return(ENXIO); 178 } 179 sc->mlx_btag = rman_get_bustag(sc->mlx_mem); 180 sc->mlx_bhandle = rman_get_bushandle(sc->mlx_mem); 181 182 /* 183 * Allocate the parent bus DMA tag appropriate for PCI. 184 */ 185 error = bus_dma_tag_create(NULL, /* parent */ 186 1, 0, /* alignment, boundary */ 187 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 188 BUS_SPACE_MAXADDR, /* highaddr */ 189 MAXBSIZE, MLX_NSEG, /* maxsize, nsegments */ 190 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 191 BUS_DMA_ALLOCNOW, /* flags */ 192 &sc->mlx_parent_dmat); 193 if (error != 0) { 194 device_printf(dev, "can't allocate parent DMA tag\n"); 195 mlx_free(sc); 196 return(ENOMEM); 197 } 198 199 /* 200 * Do bus-independant initialisation. 201 */ 202 error = mlx_attach(sc); 203 if (error != 0) { 204 mlx_free(sc); 205 return(error); 206 } 207 208 /* 209 * Start the controller. 210 */ 211 mlx_startup(sc); 212 return(0); 213 } 214