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 * $FreeBSD$ 27 */ 28 29 #include <sys/param.h> 30 #include <sys/systm.h> 31 #include <sys/kernel.h> 32 33 #include <sys/bus.h> 34 #include <sys/conf.h> 35 #include <sys/disk.h> 36 37 #include <machine/bus_memio.h> 38 #include <machine/bus_pio.h> 39 #include <machine/bus.h> 40 #include <machine/resource.h> 41 #include <sys/rman.h> 42 43 #include <pci/pcireg.h> 44 #include <pci/pcivar.h> 45 46 #include <dev/mlx/mlx_compat.h> 47 #include <dev/mlx/mlxio.h> 48 #include <dev/mlx/mlxvar.h> 49 #include <dev/mlx/mlxreg.h> 50 51 static int mlx_pci_probe(device_t dev); 52 static int mlx_pci_attach(device_t dev); 53 54 static device_method_t mlx_methods[] = { 55 /* Device interface */ 56 DEVMETHOD(device_probe, mlx_pci_probe), 57 DEVMETHOD(device_attach, mlx_pci_attach), 58 DEVMETHOD(device_detach, mlx_detach), 59 DEVMETHOD(device_shutdown, mlx_shutdown), 60 DEVMETHOD(device_suspend, mlx_suspend), 61 DEVMETHOD(device_resume, mlx_resume), 62 63 DEVMETHOD(bus_print_child, bus_generic_print_child), 64 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 65 { 0, 0 } 66 }; 67 68 static driver_t mlx_pci_driver = { 69 "mlx", 70 mlx_methods, 71 sizeof(struct mlx_softc) 72 }; 73 74 DRIVER_MODULE(mlx, pci, mlx_pci_driver, mlx_devclass, 0, 0); 75 76 struct mlx_ident 77 { 78 u_int16_t vendor; 79 u_int16_t device; 80 u_int16_t subvendor; 81 u_int16_t subdevice; 82 int iftype; 83 char *desc; 84 } mlx_identifiers[] = { 85 {0x1069, 0x0001, 0x0000, 0x0000, MLX_IFTYPE_2, "Mylex version 2 RAID interface"}, 86 {0x1069, 0x0002, 0x0000, 0x0000, MLX_IFTYPE_3, "Mylex version 3 RAID interface"}, 87 {0x1069, 0x0010, 0x0000, 0x0000, MLX_IFTYPE_4, "Mylex version 4 RAID interface"}, 88 {0x1011, 0x1065, 0x1069, 0x0020, MLX_IFTYPE_5, "Mylex version 5 RAID interface"}, 89 {0, 0, 0, 0, 0, 0} 90 }; 91 92 static int 93 mlx_pci_probe(device_t dev) 94 { 95 struct mlx_ident *m; 96 97 debug_called(1); 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))))) { 104 105 device_set_desc(dev, m->desc); 106 return(-10); /* allow room to be overridden */ 107 } 108 } 109 return(ENXIO); 110 } 111 112 static int 113 mlx_pci_attach(device_t dev) 114 { 115 struct mlx_softc *sc; 116 int i, error; 117 u_int32_t command; 118 119 debug_called(1); 120 121 /* 122 * Make sure we are going to be able to talk to this board. 123 */ 124 command = pci_read_config(dev, PCIR_COMMAND, 2); 125 if ((command & PCIM_CMD_MEMEN) == 0) { 126 device_printf(dev, "memory window not available\n"); 127 return(ENXIO); 128 } 129 /* force the busmaster enable bit on */ 130 command |= PCIM_CMD_BUSMASTEREN; 131 pci_write_config(dev, PCIR_COMMAND, command, 2); 132 133 /* 134 * Initialise softc. 135 */ 136 sc = device_get_softc(dev); 137 bzero(sc, sizeof(*sc)); 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 sc->mlx_iftype = 0; 145 for (i = 0; mlx_identifiers[i].vendor != 0; i++) { 146 if ((mlx_identifiers[i].vendor == pci_get_vendor(dev)) && 147 (mlx_identifiers[i].device == pci_get_device(dev))) { 148 sc->mlx_iftype = mlx_identifiers[i].iftype; 149 break; 150 } 151 } 152 if (sc->mlx_iftype == 0) /* shouldn't happen */ 153 return(ENXIO); 154 155 /* 156 * Allocate the PCI register window. 157 */ 158 159 /* type 2/3 adapters have an I/O region we don't prefer at base 0 */ 160 switch(sc->mlx_iftype) { 161 case MLX_IFTYPE_2: 162 case MLX_IFTYPE_3: 163 sc->mlx_mem_type = SYS_RES_MEMORY; 164 sc->mlx_mem_rid = MLX_CFG_BASE1; 165 sc->mlx_mem = bus_alloc_resource(dev, sc->mlx_mem_type, &sc->mlx_mem_rid, 0, ~0, 1, RF_ACTIVE); 166 if (sc->mlx_mem == NULL) { 167 sc->mlx_mem_type = SYS_RES_IOPORT; 168 sc->mlx_mem_rid = MLX_CFG_BASE0; 169 sc->mlx_mem = bus_alloc_resource(dev, sc->mlx_mem_type, &sc->mlx_mem_rid, 0, ~0, 1, 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(dev, sc->mlx_mem_type, &sc->mlx_mem_rid, 0, ~0, 1, RF_ACTIVE); 177 break; 178 } 179 if (sc->mlx_mem == NULL) { 180 device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n"); 181 mlx_free(sc); 182 return(ENXIO); 183 } 184 sc->mlx_btag = rman_get_bustag(sc->mlx_mem); 185 sc->mlx_bhandle = rman_get_bushandle(sc->mlx_mem); 186 187 /* 188 * Allocate the parent bus DMA tag appropriate for PCI. 189 */ 190 error = bus_dma_tag_create(NULL, /* parent */ 191 1, 0, /* alignment, boundary */ 192 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 193 BUS_SPACE_MAXADDR, /* highaddr */ 194 NULL, NULL, /* filter, filterarg */ 195 MAXBSIZE, MLX_NSEG, /* maxsize, nsegments */ 196 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 197 BUS_DMA_ALLOCNOW, /* flags */ 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-independant 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