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 1.25 2012/11/17 01:51:40 svnexp Exp $
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
38 #include <sys/thread2.h>
40 #include <bus/pci/pcireg.h>
41 #include <bus/pci/pcivar.h>
45 #define BT_PCI_IOADDR PCIR_BAR(0)
46 #define BT_PCI_MEMADDR PCIR_BAR(1)
48 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER 0x1040104Bul
49 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC 0x0140104Bul
52 bt_pci_alloc_resources(device_t dev)
54 int command, type = 0, rid, zero;
55 struct resource *regs = NULL;
56 struct resource *irq = NULL;
58 command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1);
60 /* XXX Memory Mapped I/O seems to cause problems */
61 if (command & PCIM_CMD_MEMEN) {
62 type = SYS_RES_MEMORY;
64 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
67 if (!regs && (command & PCIM_CMD_PORTEN)) {
68 type = SYS_RES_IOPORT;
70 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
77 irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero,
78 RF_ACTIVE | RF_SHAREABLE);
80 bus_release_resource(dev, type, rid, regs);
84 bt_init_softc(dev, regs, irq, 0);
90 bt_pci_release_resources(device_t dev)
92 struct bt_softc *bt = device_get_softc(dev);
95 /* XXX can't cope with memory registers anyway */
96 bus_release_resource(dev, SYS_RES_IOPORT,
97 BT_PCI_IOADDR, bt->port);
99 bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq);
104 bt_pci_probe(device_t dev)
106 switch (pci_get_devid(dev)) {
107 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER:
108 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC:
110 "Buslogic Multi-Master SCSI Host Adapter");
116 return (BUS_PROBE_DEFAULT);
120 bt_pci_attach(device_t dev)
122 struct bt_softc *bt = device_get_softc(dev);
125 /* Initialize softc */
126 error = bt_pci_alloc_resources(dev);
128 device_printf(dev, "can't allocate resources in bt_pci_attach\n");
132 /* Allocate a dmatag for our CCB DMA maps */
133 /* XXX Should be a child of the PCI bus dma tag */
134 if (bus_dma_tag_create( /* parent */ NULL,
137 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT,
138 /* highaddr */ BUS_SPACE_MAXADDR,
140 /* filterarg */ NULL,
141 /* maxsize */ BUS_SPACE_MAXSIZE_32BIT,
143 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
145 &bt->parent_dmat) != 0) {
146 bt_pci_release_resources(dev);
150 if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) {
151 bt_pci_release_resources(dev);
155 error = bt_attach(dev);
158 bt_pci_release_resources(dev);
165 static device_method_t bt_pci_methods[] = {
166 /* Device interface */
167 DEVMETHOD(device_probe, bt_pci_probe),
168 DEVMETHOD(device_attach, bt_pci_attach),
173 static driver_t bt_pci_driver = {
176 sizeof(struct bt_softc),
179 static devclass_t bt_devclass;
181 DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, NULL, NULL);
182 MODULE_DEPEND(bt, pci, 1, 1, 1);