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/malloc.h> 32 #include <sys/kernel.h> 33 34 #include <sys/bus.h> 35 #include <sys/buf.h> 36 #include <sys/conf.h> 37 #include <sys/devicestat.h> 38 #include <sys/disk.h> 39 40 #include <machine/bus_memio.h> 41 #include <machine/bus_pio.h> 42 #include <machine/bus.h> 43 #include <machine/resource.h> 44 #include <sys/rman.h> 45 46 #include <pci/pcireg.h> 47 #include <pci/pcivar.h> 48 49 #include <dev/mlx/mlxio.h> 50 #include <dev/mlx/mlxvar.h> 51 52 #if 0 53 #define debug(fmt, args...) printf("%s: " fmt "\n", __FUNCTION__ , ##args) 54 #else 55 #define debug(fmt, args...) 56 #endif 57 58 static int mlx_pci_probe(device_t dev); 59 static int mlx_pci_attach(device_t dev); 60 61 static device_method_t mlx_methods[] = { 62 /* Device interface */ 63 DEVMETHOD(device_probe, mlx_pci_probe), 64 DEVMETHOD(device_attach, mlx_pci_attach), 65 DEVMETHOD(device_detach, mlx_detach), 66 DEVMETHOD(device_shutdown, mlx_shutdown), 67 DEVMETHOD(device_suspend, mlx_suspend), 68 DEVMETHOD(device_resume, mlx_resume), 69 70 DEVMETHOD(bus_print_child, bus_generic_print_child), 71 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 72 { 0, 0 } 73 }; 74 75 static driver_t mlx_pci_driver = { 76 "mlx", 77 mlx_methods, 78 sizeof(struct mlx_softc) 79 }; 80 81 DRIVER_MODULE(mlx, pci, mlx_pci_driver, mlx_devclass, 0, 0); 82 83 struct 84 { 85 u_int16_t vendor; 86 u_int16_t device; 87 int iftype; 88 char *desc; 89 } mlx_identifiers[] = { 90 {0x1069, 0x0002, MLX_IFTYPE_3, "Mylex version 3 RAID interface"}, /* Mylex v3 software interface */ 91 {0x1069, 0x0010, MLX_IFTYPE_4, "Mylex version 4 RAID interface"}, /* Mylex v4 software interface */ 92 {0, 0, 0, 0} 93 }; 94 95 static int 96 mlx_pci_probe(device_t dev) 97 { 98 int i; 99 100 debug("called"); 101 102 for (i = 0; mlx_identifiers[i].vendor != 0; i++) { 103 if ((mlx_identifiers[i].vendor == pci_get_vendor(dev)) && 104 (mlx_identifiers[i].device == pci_get_device(dev))) { 105 106 device_set_desc(dev, mlx_identifiers[i].desc); 107 return(0); 108 } 109 } 110 return(ENXIO); 111 } 112 113 static int 114 mlx_pci_attach(device_t dev) 115 { 116 struct mlx_softc *sc; 117 int i, rid, error; 118 u_int32_t command; 119 120 debug("called"); 121 122 /* 123 * Make sure we are going to be able to talk to this board. 124 */ 125 command = pci_read_config(dev, PCIR_COMMAND, 1); 126 if ((command & PCIM_CMD_MEMEN) == 0) { 127 device_printf(dev, "memory window not available\n"); 128 return(ENXIO); 129 } 130 131 /* 132 * Initialise softc. 133 */ 134 sc = device_get_softc(dev); 135 bzero(sc, sizeof(*sc)); 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 sc->mlx_iftype = 0; 143 for (i = 0; mlx_identifiers[i].vendor != 0; i++) { 144 if ((mlx_identifiers[i].vendor == pci_get_vendor(dev)) && 145 (mlx_identifiers[i].device == pci_get_device(dev))) { 146 sc->mlx_iftype = mlx_identifiers[i].iftype; 147 break; 148 } 149 } 150 if (sc->mlx_iftype == 0) /* shouldn't happen */ 151 return(ENXIO); 152 153 /* 154 * Allocate the PCI register window. 155 */ 156 157 /* type 3 adapters have an I/O region we don't use at base 0 */ 158 rid = (sc->mlx_iftype == MLX_IFTYPE_3) ? MLX_CFG_BASE1 : MLX_CFG_BASE0; 159 sc->mlx_mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 1, RF_ACTIVE); 160 if (sc->mlx_mem == NULL) { 161 device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n"); 162 mlx_free(sc); 163 return(ENXIO); 164 } 165 sc->mlx_btag = rman_get_bustag(sc->mlx_mem); 166 sc->mlx_bhandle = rman_get_bushandle(sc->mlx_mem); 167 168 /* 169 * Allocate the parent bus DMA tag appropriate for PCI. 170 */ 171 error = bus_dma_tag_create(NULL, /* parent */ 172 1, 0, /* alignment, boundary */ 173 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 174 BUS_SPACE_MAXADDR, /* highaddr */ 175 NULL, NULL, /* filter, filterarg */ 176 MAXBSIZE, MLX_NSEG, /* maxsize, nsegments */ 177 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 178 BUS_DMA_ALLOCNOW, /* flags */ 179 &sc->mlx_parent_dmat); 180 if (error != 0) { 181 device_printf(dev, "can't allocate parent DMA tag\n"); 182 mlx_free(sc); 183 return(ENOMEM); 184 } 185 186 /* 187 * Do bus-independant initialisation. 188 */ 189 error = mlx_attach(sc); 190 if (error != 0) { 191 mlx_free(sc); 192 return(error); 193 } 194 195 /* 196 * Start the controller. 197 */ 198 mlx_startup(sc); 199 return(0); 200 } 201