2 * Product specific probe and attach routines for:
3 * Buslogic BT946, BT948, BT956, BT958 SCSI controllers
5 * Copyright (c) 1995, 1997, 1998 Justin T. Gibbs
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
29 * $FreeBSD: src/sys/dev/buslogic/bt_pci.c,v 1.11 2000/01/17 12:38:00 nyan Exp $
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
37 #include <sys/thread2.h>
39 #include <bus/pci/pcireg.h>
40 #include <bus/pci/pcivar.h>
44 #define BT_PCI_IOADDR PCIR_MAPS
45 #define BT_PCI_MEMADDR PCIR_MAPS + 4
47 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER 0x1040104Bul
48 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC 0x0140104Bul
51 bt_pci_alloc_resources(device_t dev)
53 int command, type = 0, rid, zero;
54 struct resource *regs = NULL;
55 struct resource *irq = NULL;
57 command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1);
59 /* XXX Memory Mapped I/O seems to cause problems */
60 if (command & PCIM_CMD_MEMEN) {
61 type = SYS_RES_MEMORY;
63 regs = bus_alloc_resource(dev, type, &rid,
67 if (!regs && (command & PCIM_CMD_PORTEN)) {
68 type = SYS_RES_IOPORT;
70 regs = bus_alloc_resource(dev, type, &rid,
78 irq = bus_alloc_resource(dev, SYS_RES_IRQ, &zero,
79 0, ~0, 1, RF_ACTIVE | RF_SHAREABLE);
81 bus_release_resource(dev, type, rid, regs);
85 bt_init_softc(dev, regs, irq, 0);
91 bt_pci_release_resources(device_t dev)
93 struct bt_softc *bt = device_get_softc(dev);
96 /* XXX can't cope with memory registers anyway */
97 bus_release_resource(dev, SYS_RES_IOPORT,
98 BT_PCI_IOADDR, bt->port);
100 bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq);
105 bt_pci_probe(device_t dev)
107 switch (pci_get_devid(dev)) {
108 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER:
109 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC:
111 "Buslogic Multi-Master SCSI Host Adapter");
117 return (BUS_PROBE_DEFAULT);
121 bt_pci_attach(device_t dev)
123 struct bt_softc *bt = device_get_softc(dev);
126 /* Initialize softc */
127 error = bt_pci_alloc_resources(dev);
129 device_printf(dev, "can't allocate resources in bt_pci_attach\n");
133 /* Allocate a dmatag for our CCB DMA maps */
134 /* XXX Should be a child of the PCI bus dma tag */
135 if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/1, /*boundary*/0,
136 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
137 /*highaddr*/BUS_SPACE_MAXADDR,
138 /*filter*/NULL, /*filterarg*/NULL,
139 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
140 /*nsegments*/BUS_SPACE_UNRESTRICTED,
141 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
142 /*flags*/0, &bt->parent_dmat) != 0) {
143 bt_pci_release_resources(dev);
148 * Protect ourself from spurrious interrupts during
149 * intialization and attach. We should really rely
150 * on interrupts during attach, but we don't have
151 * access to our interrupts during ISA probes, so until
152 * that changes, we mask our interrupts during attach
157 if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) {
158 bt_pci_release_resources(dev);
163 error = bt_attach(dev);
167 bt_pci_release_resources(dev);
174 static device_method_t bt_pci_methods[] = {
175 /* Device interface */
176 DEVMETHOD(device_probe, bt_pci_probe),
177 DEVMETHOD(device_attach, bt_pci_attach),
182 static driver_t bt_pci_driver = {
185 sizeof(struct bt_softc),
188 static devclass_t bt_devclass;
190 DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, NULL, NULL);