FreeBSD-5.3/sys/dev/buslogic/bt_pci.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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sys/dev/buslogic/bt_pci.c,v 1.19 2004/05/30 20:08:28 phk Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/bus.h>
#include <dev/pci/pcireg.h>
#include <dev/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_BAR(0)
#define BT_PCI_MEMADDR PCIR_BAR(1)
#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_any(dev, type, &rid, RF_ACTIVE);
}
#else
if (!regs && (command & PCIM_CMD_PORTEN)) {
type = SYS_RES_IOPORT;
rid = BT_PCI_IOADDR;
regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
}
#endif
if (!regs)
return (ENOMEM);
zero = 0;
irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero,
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 */ ~0,
/* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
/* flags */ 0,
/* lockfunc */ busdma_lock_mutex,
/* lockarg */ &Giant,
&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);