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 #include <dev/mlx/mlxreg.h> 52 53 #if 0 54 #define debug(fmt, args...) printf("%s: " fmt "\n", __FUNCTION__ , ##args) 55 #else 56 #define debug(fmt, args...) 57 #endif 58 59 static int mlx_pci_probe(device_t dev); 60 static int mlx_pci_attach(device_t dev); 61 62 static device_method_t mlx_methods[] = { 63 /* Device interface */ 64 DEVMETHOD(device_probe, mlx_pci_probe), 65 DEVMETHOD(device_attach, mlx_pci_attach), 66 DEVMETHOD(device_detach, mlx_detach), 67 DEVMETHOD(device_shutdown, mlx_shutdown), 68 DEVMETHOD(device_suspend, mlx_suspend), 69 DEVMETHOD(device_resume, mlx_resume), 70 71 DEVMETHOD(bus_print_child, bus_generic_print_child), 72 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 73 { 0, 0 } 74 }; 75 76 static driver_t mlx_pci_driver = { 77 "mlx", 78 mlx_methods, 79 sizeof(struct mlx_softc) 80 }; 81 82 DRIVER_MODULE(mlx, pci, mlx_pci_driver, mlx_devclass, 0, 0); 83 84 struct mlx_ident 85 { 86 u_int16_t vendor; 87 u_int16_t device; 88 u_int16_t subvendor; 89 u_int16_t subdevice; 90 int iftype; 91 char *desc; 92 } mlx_identifiers[] = { 93 /* {0x1069, 0x0001, 0x0000, 0x0000, MLX_IFTYPE_2, "Mylex version 2 RAID interface"}, */ 94 {0x1069, 0x0002, 0x0000, 0x0000, MLX_IFTYPE_3, "Mylex version 3 RAID interface"}, 95 {0x1069, 0x0010, 0x0000, 0x0000, MLX_IFTYPE_4, "Mylex version 4 RAID interface"}, 96 {0x1011, 0x1065, 0x1069, 0x0020, MLX_IFTYPE_5, "Mylex version 5 RAID interface"}, 97 {0, 0, 0, 0, 0, 0} 98 }; 99 100 static int 101 mlx_pci_probe(device_t dev) 102 { 103 struct mlx_ident *m; 104 105 debug("called"); 106 107 for (m = mlx_identifiers; m->vendor != 0; m++) { 108 if ((m->vendor == pci_get_vendor(dev)) && 109 (m->device == pci_get_device(dev)) && 110 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) && 111 (m->subdevice == pci_get_subdevice(dev))))) { 112 113 device_set_desc(dev, m->desc); 114 return(0); 115 } 116 } 117 return(ENXIO); 118 } 119 120 static int 121 mlx_pci_attach(device_t dev) 122 { 123 struct mlx_softc *sc; 124 int i, rid, error; 125 u_int32_t command; 126 127 debug("called"); 128 129 /* 130 * Make sure we are going to be able to talk to this board. 131 */ 132 command = pci_read_config(dev, PCIR_COMMAND, 1); 133 if ((command & PCIM_CMD_MEMEN) == 0) { 134 device_printf(dev, "memory window not available\n"); 135 return(ENXIO); 136 } 137 138 /* 139 * Initialise softc. 140 */ 141 sc = device_get_softc(dev); 142 bzero(sc, sizeof(*sc)); 143 sc->mlx_dev = dev; 144 145 /* 146 * Work out what sort of adapter this is (we need to know this in order 147 * to map the appropriate interface resources). 148 */ 149 sc->mlx_iftype = 0; 150 for (i = 0; mlx_identifiers[i].vendor != 0; i++) { 151 if ((mlx_identifiers[i].vendor == pci_get_vendor(dev)) && 152 (mlx_identifiers[i].device == pci_get_device(dev))) { 153 sc->mlx_iftype = mlx_identifiers[i].iftype; 154 break; 155 } 156 } 157 if (sc->mlx_iftype == 0) /* shouldn't happen */ 158 return(ENXIO); 159 160 /* 161 * Allocate the PCI register window. 162 */ 163 164 /* type 3 adapters have an I/O region we don't use at base 0 */ 165 rid = (sc->mlx_iftype == MLX_IFTYPE_3) ? MLX_CFG_BASE1 : MLX_CFG_BASE0; 166 sc->mlx_mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 1, RF_ACTIVE); 167 if (sc->mlx_mem == NULL) { 168 device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n"); 169 mlx_free(sc); 170 return(ENXIO); 171 } 172 sc->mlx_btag = rman_get_bustag(sc->mlx_mem); 173 sc->mlx_bhandle = rman_get_bushandle(sc->mlx_mem); 174 175 /* 176 * Allocate the parent bus DMA tag appropriate for PCI. 177 */ 178 error = bus_dma_tag_create(NULL, /* parent */ 179 1, 0, /* alignment, boundary */ 180 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 181 BUS_SPACE_MAXADDR, /* highaddr */ 182 NULL, NULL, /* filter, filterarg */ 183 MAXBSIZE, MLX_NSEG, /* maxsize, nsegments */ 184 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 185 BUS_DMA_ALLOCNOW, /* flags */ 186 &sc->mlx_parent_dmat); 187 if (error != 0) { 188 device_printf(dev, "can't allocate parent DMA tag\n"); 189 mlx_free(sc); 190 return(ENOMEM); 191 } 192 193 /* 194 * Do bus-independant initialisation. 195 */ 196 error = mlx_attach(sc); 197 if (error != 0) { 198 mlx_free(sc); 199 return(error); 200 } 201 202 /* 203 * Start the controller. 204 */ 205 mlx_startup(sc); 206 return(0); 207 } 208