sys/dev/buslogic/bt_pci.c

   1 /*-
   2  * Product specific probe and attach routines for:
   3  *      Buslogic BT946, BT948, BT956, BT958 SCSI controllers
   4  *
   5  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   6  *
   7  * Copyright (c) 1995, 1997, 1998 Justin T. Gibbs
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions, and the following disclaimer,
  15  *    without modification, immediately at the beginning of the file.
  16  * 2. The name of the author may not be used to endorse or promote products
  17  *    derived from this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  23  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __FBSDID("$FreeBSD$");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/kernel.h>
  38 #include <sys/module.h>
  39 #include <sys/lock.h>
  40 #include <sys/mutex.h>
  41 #include <sys/bus.h>
  42
  43 #include <dev/pci/pcireg.h>
  44 #include <dev/pci/pcivar.h>
  45
  46 #include <machine/bus.h>
  47 #include <machine/resource.h>
  48 #include <sys/rman.h>
  49
  50 #include <dev/buslogic/btreg.h>
  51
  52 #define BT_PCI_IOADDR   PCIR_BAR(0)
  53 #define BT_PCI_MEMADDR  PCIR_BAR(1)
  54
  55 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER      0x1040104Bul
  56 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC   0x0140104Bul
  57 #define PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT       0x8130104Bul
  58
  59 static int
  60 bt_pci_alloc_resources(device_t dev)
  61 {
  62         int             type = 0, rid, zero;
  63         struct resource *regs = NULL;
  64         struct resource *irq = NULL;
  65
  66 #if 0
  67         /* XXX Memory Mapped I/O seems to cause problems */
  68         type = SYS_RES_MEMORY;
  69         rid = BT_PCI_MEMADDR;
  70         regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
  71 #else
  72         type = SYS_RES_IOPORT;
  73         rid = BT_PCI_IOADDR;
  74         regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
  75 #endif
  76         if (!regs)
  77                 return (ENOMEM);
  78
  79         zero = 0;
  80         irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero,
  81                                      RF_ACTIVE | RF_SHAREABLE);
  82         if (!irq) {
  83                 bus_release_resource(dev, type, rid, regs);
  84                 return (ENOMEM);
  85         }
  86
  87         bt_init_softc(dev, regs, irq, 0);
  88
  89         return (0);
  90 }
  91
  92 static void
  93 bt_pci_release_resources(device_t dev)
  94 {
  95         struct bt_softc *bt = device_get_softc(dev);
  96
  97         if (bt->port)
  98                 /* XXX can't cope with memory registers anyway */
  99                 bus_release_resource(dev, SYS_RES_IOPORT,
 100                                      BT_PCI_IOADDR, bt->port);
 101         if (bt->irq)
 102                 bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq);
 103         bt_free_softc(dev);
 104 }
 105
 106 static int
 107 bt_pci_probe(device_t dev)
 108 {
 109         switch (pci_get_devid(dev)) {
 110                 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER:
 111                 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC:
 112                 {
 113                         struct bt_softc   *bt = device_get_softc(dev);
 114                         pci_info_data_t pci_info;
 115                         int error;
 116
 117                         error = bt_pci_alloc_resources(dev);
 118                         if (error)
 119                                 return (error);
 120
 121                         /*
 122                          * Determine if an ISA compatible I/O port has been
 123                          * enabled.  If so, record the port so it will not
 124                          * be probed by our ISA probe.  If the PCI I/O port
 125                          * was not set to the compatibility port, disable it.
 126                          */
 127                         error = bt_cmd(bt, BOP_INQUIRE_PCI_INFO,
 128                                        /*param*/NULL, /*paramlen*/0,
 129                                        (u_int8_t*)&pci_info, sizeof(pci_info),
 130                                        DEFAULT_CMD_TIMEOUT);
 131                         if (error == 0
 132                          && pci_info.io_port < BIO_DISABLED) {
 133                                 bt_mark_probed_bio(pci_info.io_port);
 134                                 if (rman_get_start(bt->port) !=
 135                                     bt_iop_from_bio(pci_info.io_port)) {
 136                                         u_int8_t new_addr;
 137
 138                                         new_addr = BIO_DISABLED;
 139                                         bt_cmd(bt, BOP_MODIFY_IO_ADDR,
 140                                                /*param*/&new_addr,
 141                                                /*paramlen*/1, /*reply_buf*/NULL,
 142                                                /*reply_len*/0,
 143                                                DEFAULT_CMD_TIMEOUT);
 144                                 }
 145                         }
 146                         bt_pci_release_resources(dev);
 147                         device_set_desc(dev, "Buslogic Multi-Master SCSI Host Adapter");
 148                         return (BUS_PROBE_DEFAULT);
 149                 }
 150                 default:
 151                         break;
 152         }
 153
 154         return (ENXIO);
 155 }
 156
 157 static int
 158 bt_pci_attach(device_t dev)
 159 {
 160         struct bt_softc   *bt = device_get_softc(dev);
 161         int                error;
 162
 163         /* Initialize softc */
 164         error = bt_pci_alloc_resources(dev);
 165         if (error) {
 166                 device_printf(dev, "can't allocate resources in bt_pci_attach\n");
 167                 return error;
 168         }
 169
 170         /* Allocate a dmatag for our CCB DMA maps */
 171         if (bus_dma_tag_create( /* PCI parent   */ bus_get_dma_tag(dev),
 172                                 /* alignemnt    */ 1,
 173                                 /* boundary     */ 0,
 174                                 /* lowaddr      */ BUS_SPACE_MAXADDR_32BIT,
 175                                 /* highaddr     */ BUS_SPACE_MAXADDR,
 176                                 /* filter       */ NULL,
 177                                 /* filterarg    */ NULL,
 178                                 /* maxsize      */ BUS_SPACE_MAXSIZE_32BIT,
 179                                 /* nsegments    */ ~0,
 180                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_32BIT,
 181                                 /* flags        */ 0,
 182                                 /* lockfunc     */ NULL,
 183                                 /* lockarg      */ NULL,
 184                                 &bt->parent_dmat) != 0) {
 185                 bt_pci_release_resources(dev);
 186                 return (ENOMEM);
 187         }
 188
 189         if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) {
 190                 bt_pci_release_resources(dev);
 191                 return (ENXIO);
 192         }
 193
 194         error = bt_attach(dev);
 195
 196         if (error) {
 197                 bt_pci_release_resources(dev);
 198                 return (error);
 199         }
 200
 201         return (0);
 202 }
 203
 204 static device_method_t bt_pci_methods[] = {
 205         /* Device interface */
 206         DEVMETHOD(device_probe,         bt_pci_probe),
 207         DEVMETHOD(device_attach,        bt_pci_attach),
 208
 209         { 0, 0 }
 210 };
 211
 212 static driver_t bt_pci_driver = {
 213         "bt",
 214         bt_pci_methods,
 215         sizeof(struct bt_softc),
 216 };
 217
 218 static devclass_t bt_devclass;
 219
 220 DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, 0, 0);
 221 MODULE_DEPEND(bt, pci, 1, 1, 1);