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