mlx_pci.c revision 331722
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 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: stable/11/sys/dev/mlx/mlx_pci.c 331722 2018-03-29 02:50:57Z eadler $"); 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/bio.h> 33#include <sys/kernel.h> 34#include <sys/lock.h> 35#include <sys/module.h> 36#include <sys/mutex.h> 37#include <sys/sx.h> 38 39#include <sys/bus.h> 40#include <sys/conf.h> 41 42#include <machine/bus.h> 43#include <machine/resource.h> 44#include <sys/rman.h> 45 46#include <geom/geom_disk.h> 47 48#include <dev/pci/pcireg.h> 49#include <dev/pci/pcivar.h> 50 51#include <dev/mlx/mlxio.h> 52#include <dev/mlx/mlxvar.h> 53#include <dev/mlx/mlxreg.h> 54 55static int mlx_pci_probe(device_t dev); 56static int mlx_pci_attach(device_t dev); 57 58static device_method_t mlx_methods[] = { 59 /* Device interface */ 60 DEVMETHOD(device_probe, mlx_pci_probe), 61 DEVMETHOD(device_attach, mlx_pci_attach), 62 DEVMETHOD(device_detach, mlx_detach), 63 DEVMETHOD(device_shutdown, mlx_shutdown), 64 DEVMETHOD(device_suspend, mlx_suspend), 65 DEVMETHOD(device_resume, mlx_resume), 66 67 DEVMETHOD_END 68}; 69 70static driver_t mlx_pci_driver = { 71 "mlx", 72 mlx_methods, 73 sizeof(struct mlx_softc) 74}; 75 76DRIVER_MODULE(mlx, pci, mlx_pci_driver, mlx_devclass, 0, 0); 77 78struct mlx_ident 79{ 80 u_int16_t vendor; 81 u_int16_t device; 82 u_int16_t subvendor; 83 u_int16_t subdevice; 84 int iftype; 85 char *desc; 86} mlx_identifiers[] = { 87 {0x1069, 0x0001, 0x0000, 0x0000, MLX_IFTYPE_2, "Mylex version 2 RAID interface"}, 88 {0x1069, 0x0002, 0x0000, 0x0000, MLX_IFTYPE_3, "Mylex version 3 RAID interface"}, 89 {0x1069, 0x0010, 0x0000, 0x0000, MLX_IFTYPE_4, "Mylex version 4 RAID interface"}, 90 {0x1011, 0x1065, 0x1069, 0x0020, MLX_IFTYPE_5, "Mylex version 5 RAID interface"}, 91 {0, 0, 0, 0, 0, 0} 92}; 93 94static struct mlx_ident * 95mlx_pci_match(device_t dev) 96{ 97 struct mlx_ident *m; 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 return (m); 105 } 106 return (NULL); 107} 108 109static int 110mlx_pci_probe(device_t dev) 111{ 112 struct mlx_ident *m; 113 114 debug_called(1); 115 116 m = mlx_pci_match(dev); 117 if (m != NULL) { 118 device_set_desc(dev, m->desc); 119 return(BUS_PROBE_DEFAULT); 120 } 121 return(ENXIO); 122} 123 124static int 125mlx_pci_attach(device_t dev) 126{ 127 struct mlx_softc *sc; 128 struct mlx_ident *m; 129 int error; 130 131 debug_called(1); 132 133 pci_enable_busmaster(dev); 134 135 sc = device_get_softc(dev); 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 m = mlx_pci_match(dev); 143 if (m == NULL) /* shouldn't happen */ 144 return(ENXIO); 145 sc->mlx_iftype = m->iftype; 146 147 mtx_init(&sc->mlx_io_lock, "mlx I/O", NULL, MTX_DEF); 148 sx_init(&sc->mlx_config_lock, "mlx config"); 149 callout_init_mtx(&sc->mlx_timeout, &sc->mlx_io_lock, 0); 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_any(dev, sc->mlx_mem_type, 162 &sc->mlx_mem_rid, RF_ACTIVE); 163 if (sc->mlx_mem == NULL) { 164 sc->mlx_mem_type = SYS_RES_IOPORT; 165 sc->mlx_mem_rid = MLX_CFG_BASE0; 166 sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type, 167 &sc->mlx_mem_rid, RF_ACTIVE); 168 } 169 break; 170 case MLX_IFTYPE_4: 171 case MLX_IFTYPE_5: 172 sc->mlx_mem_type = SYS_RES_MEMORY; 173 sc->mlx_mem_rid = MLX_CFG_BASE0; 174 sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type, 175 &sc->mlx_mem_rid, RF_ACTIVE); 176 break; 177 } 178 if (sc->mlx_mem == NULL) { 179 device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n"); 180 mlx_free(sc); 181 return(ENXIO); 182 } 183 184 /* 185 * Allocate the parent bus DMA tag appropriate for PCI. 186 */ 187 error = bus_dma_tag_create(bus_get_dma_tag(dev), /* PCI parent */ 188 1, 0, /* alignment, boundary */ 189 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 190 BUS_SPACE_MAXADDR, /* highaddr */ 191 NULL, NULL, /* filter, filterarg */ 192 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 193 BUS_SPACE_UNRESTRICTED, /* nsegments */ 194 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 195 BUS_DMA_ALLOCNOW, /* flags */ 196 NULL, /* lockfunc */ 197 NULL, /* lockarg */ 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