232 lines
6.2 KiB
C
232 lines
6.2 KiB
C
/*
|
|
* Product specific probe and attach routines for:
|
|
* Buslogic BT946, BT948, BT956, BT958 SCSI controllers
|
|
*
|
|
* Copyright (c) 1995, 1997, 1998 Justin T. Gibbs
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
* without modification, immediately at the beginning of the file.
|
|
* 2. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
|
|
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/bus.h>
|
|
|
|
#include <pci/pcireg.h>
|
|
#include <pci/pcivar.h>
|
|
|
|
#include <machine/bus_memio.h>
|
|
#include <machine/bus_pio.h>
|
|
#include <machine/bus.h>
|
|
#include <machine/resource.h>
|
|
#include <sys/rman.h>
|
|
|
|
#include <dev/buslogic/btreg.h>
|
|
|
|
#define BT_PCI_IOADDR PCIR_MAPS
|
|
#define BT_PCI_MEMADDR PCIR_MAPS + 4
|
|
|
|
#define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER 0x1040104Bul
|
|
#define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC 0x0140104Bul
|
|
#define PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT 0x8130104Bul
|
|
|
|
static int
|
|
bt_pci_alloc_resources(device_t dev)
|
|
{
|
|
int command, type = 0, rid, zero;
|
|
struct resource *regs = 0;
|
|
struct resource *irq = 0;
|
|
|
|
command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1);
|
|
#if 0
|
|
/* XXX Memory Mapped I/O seems to cause problems */
|
|
if (command & PCIM_CMD_MEMEN) {
|
|
type = SYS_RES_MEMORY;
|
|
rid = BT_PCI_MEMADDR;
|
|
regs = bus_alloc_resource(dev, type, &rid,
|
|
0, ~0, 1, RF_ACTIVE);
|
|
}
|
|
#else
|
|
if (!regs && (command & PCIM_CMD_PORTEN)) {
|
|
type = SYS_RES_IOPORT;
|
|
rid = BT_PCI_IOADDR;
|
|
regs = bus_alloc_resource(dev, type, &rid,
|
|
0, ~0, 1, RF_ACTIVE);
|
|
}
|
|
#endif
|
|
if (!regs)
|
|
return (ENOMEM);
|
|
|
|
zero = 0;
|
|
irq = bus_alloc_resource(dev, SYS_RES_IRQ, &zero,
|
|
0, ~0, 1, RF_ACTIVE | RF_SHAREABLE);
|
|
if (!irq) {
|
|
bus_release_resource(dev, type, rid, regs);
|
|
return (ENOMEM);
|
|
}
|
|
|
|
bt_init_softc(dev, regs, irq, 0);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
bt_pci_release_resources(device_t dev)
|
|
{
|
|
struct bt_softc *bt = device_get_softc(dev);
|
|
|
|
if (bt->port)
|
|
/* XXX can't cope with memory registers anyway */
|
|
bus_release_resource(dev, SYS_RES_IOPORT,
|
|
BT_PCI_IOADDR, bt->port);
|
|
if (bt->irq)
|
|
bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq);
|
|
bt_free_softc(dev);
|
|
}
|
|
|
|
static int
|
|
bt_pci_probe(device_t dev)
|
|
{
|
|
switch (pci_get_devid(dev)) {
|
|
case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER:
|
|
case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC:
|
|
{
|
|
struct bt_softc *bt = device_get_softc(dev);
|
|
pci_info_data_t pci_info;
|
|
int error;
|
|
|
|
error = bt_pci_alloc_resources(dev);
|
|
if (error)
|
|
return (error);
|
|
|
|
/*
|
|
* Determine if an ISA compatible I/O port has been
|
|
* enabled. If so, record the port so it will not
|
|
* be probed by our ISA probe. If the PCI I/O port
|
|
* was not set to the compatibility port, disable it.
|
|
*/
|
|
error = bt_cmd(bt, BOP_INQUIRE_PCI_INFO,
|
|
/*param*/NULL, /*paramlen*/0,
|
|
(u_int8_t*)&pci_info, sizeof(pci_info),
|
|
DEFAULT_CMD_TIMEOUT);
|
|
if (error == 0
|
|
&& pci_info.io_port < BIO_DISABLED) {
|
|
bt_mark_probed_bio(pci_info.io_port);
|
|
if (rman_get_start(bt->port) !=
|
|
bt_iop_from_bio(pci_info.io_port)) {
|
|
u_int8_t new_addr;
|
|
|
|
new_addr = BIO_DISABLED;
|
|
bt_cmd(bt, BOP_MODIFY_IO_ADDR,
|
|
/*param*/&new_addr,
|
|
/*paramlen*/1, /*reply_buf*/NULL,
|
|
/*reply_len*/0,
|
|
DEFAULT_CMD_TIMEOUT);
|
|
}
|
|
}
|
|
bt_pci_release_resources(dev);
|
|
device_set_desc(dev, "Buslogic Multi-Master SCSI Host Adapter");
|
|
return (0);
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return (ENXIO);
|
|
}
|
|
|
|
static int
|
|
bt_pci_attach(device_t dev)
|
|
{
|
|
struct bt_softc *bt = device_get_softc(dev);
|
|
int opri;
|
|
int error;
|
|
|
|
/* Initialize softc */
|
|
error = bt_pci_alloc_resources(dev);
|
|
if (error) {
|
|
device_printf(dev, "can't allocate resources in bt_pci_attach\n");
|
|
return error;
|
|
}
|
|
|
|
/* Allocate a dmatag for our CCB DMA maps */
|
|
/* XXX Should be a child of the PCI bus dma tag */
|
|
if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/1, /*boundary*/0,
|
|
/*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
|
|
/*highaddr*/BUS_SPACE_MAXADDR,
|
|
/*filter*/NULL, /*filterarg*/NULL,
|
|
/*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
|
|
/*nsegments*/BUS_SPACE_UNRESTRICTED,
|
|
/*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
|
|
/*flags*/0, &bt->parent_dmat) != 0) {
|
|
bt_pci_release_resources(dev);
|
|
return (ENOMEM);
|
|
}
|
|
|
|
/*
|
|
* Protect ourself from spurrious interrupts during
|
|
* intialization and attach. We should really rely
|
|
* on interrupts during attach, but we don't have
|
|
* access to our interrupts during ISA probes, so until
|
|
* that changes, we mask our interrupts during attach
|
|
* too.
|
|
*/
|
|
opri = splcam();
|
|
|
|
if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) {
|
|
bt_pci_release_resources(dev);
|
|
splx(opri);
|
|
return (ENXIO);
|
|
}
|
|
|
|
error = bt_attach(dev);
|
|
splx(opri);
|
|
|
|
if (error) {
|
|
bt_pci_release_resources(dev);
|
|
return (error);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static device_method_t bt_pci_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, bt_pci_probe),
|
|
DEVMETHOD(device_attach, bt_pci_attach),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t bt_pci_driver = {
|
|
"bt",
|
|
bt_pci_methods,
|
|
sizeof(struct bt_softc),
|
|
};
|
|
|
|
static devclass_t bt_devclass;
|
|
|
|
DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, 0, 0);
|