2 * Copyright (c) 2000 Matthew N. Dodd <winter@jurai.net>
5 * Copyright (c) 1997 Simon Shapiro
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 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
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
21 * FOR 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/dpt/dpt_pci.c,v 1.17.2.2 2000/08/26 22:21:21 peter 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>
43 #include <bus/cam/scsi/scsi_all.h>
47 #define DPT_VENDOR_ID 0x1044
48 #define DPT_DEVICE_ID 0xa400
50 #define DPT_PCI_IOADDR PCIR_MAPS /* I/O Address */
51 #define DPT_PCI_MEMADDR (PCIR_MAPS + 4) /* Mem I/O Address */
53 #define ISA_PRIMARY_WD_ADDRESS 0x1f8
55 static int dpt_pci_probe (device_t);
56 static int dpt_pci_attach (device_t);
59 dpt_pci_probe (device_t dev)
61 if ((pci_get_vendor(dev) == DPT_VENDOR_ID) &&
62 (pci_get_device(dev) == DPT_DEVICE_ID)) {
63 device_set_desc(dev, "DPT Caching SCSI RAID Controller");
70 dpt_pci_attach (device_t dev)
73 struct resource *io = 0;
74 struct resource *irq = 0;
82 command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1);
85 if ((command & PCIM_CMD_MEMEN) != 0) {
86 rid = DPT_PCI_MEMADDR;
87 iotype = SYS_RES_MEMORY;
88 io = bus_alloc_resource(dev, iotype, &rid, 0, ~0, 1, RF_ACTIVE);
91 if (io == NULL && (command & PCIM_CMD_PORTEN) != 0) {
93 iotype = SYS_RES_IOPORT;
94 io = bus_alloc_resource(dev, iotype, &rid, 0, ~0, 1, RF_ACTIVE);
98 device_printf(dev, "can't allocate register resources\n");
104 irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
105 RF_ACTIVE | RF_SHAREABLE);
107 device_printf(dev, "No irq?!\n");
112 /* Ensure busmastering is enabled */
113 command |= PCIM_CMD_BUSMASTEREN;
114 pci_write_config(dev, PCIR_COMMAND, command, /*bytes*/1);
116 if (rman_get_start(io) == (ISA_PRIMARY_WD_ADDRESS - 0x10)) {
117 #ifdef DPT_DEBUG_WARN
118 device_printf(dev, "Mapped as an IDE controller. "
119 "Disabling SCSI setup\n");
125 /* Device registers are offset 0x10 into the register window. FEH */
126 dpt = dpt_alloc(dev, rman_get_bustag(io), rman_get_bushandle(io) + 0x10);
132 /* Allocate a dmatag representing the capabilities of this attachment */
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,
142 /* nsegments */ BUS_SPACE_UNRESTRICTED,
143 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
145 &dpt->parent_dmat) != 0) {
153 if (dpt_init(dpt) != 0) {
159 /* Register with the XPT */
164 error = bus_setup_intr(dev, irq, 0, dpt_intr, dpt,
167 device_printf(dev, "Unable to register interrupt handler\n");
176 bus_release_resource(dev, iotype, 0, io);
178 bus_release_resource(dev, SYS_RES_IRQ, 0, irq);
183 static device_method_t dpt_pci_methods[] = {
184 /* Device interface */
185 DEVMETHOD(device_probe, dpt_pci_probe),
186 DEVMETHOD(device_attach, dpt_pci_attach),
191 static driver_t dpt_pci_driver = {
197 static devclass_t dpt_devclass;
199 DRIVER_MODULE(dpt, pci, dpt_pci_driver, dpt_devclass, NULL, NULL);