FreeBSD-5.3/sys/dev/buslogic/bt_mca.c
/*-
* Copyright (c) 1999 Matthew N. Dodd <winter@jurai.net>
* 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.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 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_mca.c,v 1.9 2004/03/17 17:50:29 njl Exp $");
/*
* Written using the bt_isa/bt_pci code as a reference.
*
* Thanks to Andy Farkas <andyf@speednet.com.au> for
* testing and feedback.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <machine/cpufunc.h>
#include <machine/md_var.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <dev/mca/mca_busreg.h>
#include <dev/mca/mca_busvar.h>
#include <i386/isa/isa_dma.h>
#include <dev/buslogic/btreg.h>
#include <cam/scsi/scsi_all.h>
static struct mca_ident bt_mca_devs[] = {
{ 0x0708, "BusLogic 32 Bit Bus Master MCA-to-SCSI Host Adapter" },
{ 0x0708, "BusTek BT-640A Micro Channel to SCSI Host Adapter" },
{ 0x0708, "Storage Dimensions SDC3211B 32-bit SCSI Host Adapter" },
{ 0x0709, "Storage Dimensions SDC3211F 32-bit FAST SCSI Host Adapter" },
{ 0, NULL },
};
#define BT_MCA_IOPORT_POS1 MCA_ADP_POS(MCA_POS0)
#define BT_MCA_IOPORT_POS2 MCA_ADP_POS(MCA_POS1)
#define BT_MCA_IOPORT_MASK1 0x10
#define BT_MCA_IOPORT_MASK2 0x03
#define BT_MCA_IOPORT_SIZE 0x03
#define BT_MCA_IOPORT(pos) (0x30 + \
(((u_int32_t)pos &\
BT_MCA_IOPORT_MASK2) << 8) + \
(((u_int32_t)pos &\
BT_MCA_IOPORT_MASK1) >> 2))
#define BT_MCA_IRQ_POS MCA_ADP_POS(MCA_POS0)
#define BT_MCA_IRQ_MASK 0x0e
#define BT_MCA_IRQ(pos) (((pos & BT_MCA_IRQ_MASK) >> 1) + 8)
#define BT_MCA_DRQ_POS MCA_ADP_POS(MCA_POS3)
#define BT_MCA_DRQ_MASK 0x0f
#define BT_MCA_DRQ(pos) (pos & BT_MCA_DRQ_MASK)
#define BT_MCA_SCSIID_POS MCA_ADP_POS(MCA_POS2)
#define BT_MCA_SCSIID_MASK 0xe0
#define BT_MCA_SCSIID(pos) ((pos & BT_MCA_SCSIID_MASK) >> 5)
static bus_dma_filter_t btvlbouncefilter;
static bus_dmamap_callback_t btmapsensebuffers;
static void
bt_mca_release_resources (device_t dev)
{
struct bt_softc * bt = device_get_softc(dev);
if (bt->port)
bus_release_resource(dev, SYS_RES_IOPORT, 0, bt->port);
if (bt->irq)
bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq);
if (bt->drq)
bus_release_resource(dev, SYS_RES_DRQ, 0, bt->drq);
bt_free_softc(dev);
}
#define BT_MCA_PROBE 0
#define BT_MCA_ATTACH 1
static int
bt_mca_alloc_resources(device_t dev, int mode)
{
struct resource * io = NULL;
struct resource * irq = NULL;
struct resource * drq = NULL;
int rid;
rid = 0;
io = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
if (io == NULL) {
printf("bt_mca_alloc_resources() failed to allocate IOPORT\n");
return (ENOMEM);
}
if (mode == BT_MCA_ATTACH) {
rid = 0;
irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
if (irq == NULL) {
printf("bt_mca_alloc_resources() failed to allocate IRQ\n");
goto bad;
}
rid = 0;
drq = bus_alloc_resource_any(dev, SYS_RES_DRQ, &rid, RF_ACTIVE);
if (drq == NULL) {
printf("bt_mca_alloc_resources() failed to allocate DRQ\n");
goto bad;
}
}
bt_init_softc(dev, io, irq, drq);
return (0);
bad:
bt_mca_release_resources(dev);
return (ENOMEM);
}
static int
bt_mca_probe (device_t dev)
{
const char * desc;
mca_id_t id = mca_get_id(dev);
struct bt_probe_info info;
u_int32_t iobase = 0;
u_int32_t iosize = 0;
u_int8_t drq = 0;
u_int8_t irq = 0;
u_int8_t pos;
int result;
desc = mca_match_id(id, bt_mca_devs);
if (!desc)
return (ENXIO);
device_set_desc(dev, desc);
pos = (mca_pos_read(dev, BT_MCA_IOPORT_POS1) & BT_MCA_IOPORT_MASK1) |
(mca_pos_read(dev, BT_MCA_IOPORT_POS2) & BT_MCA_IOPORT_MASK2);
iobase = BT_MCA_IOPORT(pos);
iosize = BT_MCA_IOPORT_SIZE;
pos = mca_pos_read(dev, BT_MCA_DRQ_POS);
drq = BT_MCA_DRQ(pos);
pos = mca_pos_read(dev, BT_MCA_IRQ_POS);
irq = BT_MCA_IRQ(pos);
bt_mark_probed_iop(iobase);
mca_add_iospace(dev, iobase, iosize);
/* And allocate them */
bt_mca_alloc_resources(dev, BT_MCA_PROBE);
if (bt_port_probe(dev, &info) != 0) {
printf("bt_mca_probe: Probe failed for "
"card at slot %d\n", mca_get_slot(dev) + 1);
result = ENXIO;
} else {
mca_add_drq(dev, drq);
mca_add_irq(dev, irq);
result = 0;
}
bt_mca_release_resources(dev);
return (result);
}
static int
bt_mca_attach (device_t dev)
{
struct bt_softc * bt = device_get_softc(dev);
int error = 0;
/* Allocate resources */
if ((error = bt_mca_alloc_resources(dev, BT_MCA_ATTACH))) {
device_printf(dev, "Unable to allocate resources in bt_mca_attach()\n");
return (error);
}
isa_dmacascade(rman_get_start(bt->drq));
/* Allocate a dmatag for our CCB DMA maps */
if (bus_dma_tag_create( /* parent */ NULL,
/* alignemnt */ 1,
/* boundary */ 0,
/* lowaddr */ BUS_SPACE_MAXADDR_24BIT,
/* highaddr */ BUS_SPACE_MAXADDR,
/* filter */ btvlbouncefilter,
/* filterarg */ bt,
/* 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_mca_release_resources(dev);
return (ENOMEM);
}
if (bt_init(dev)) {
bt_mca_release_resources(dev);
return (ENOMEM);
}
/* DMA tag for our sense buffers */
if (bus_dma_tag_create( /* parent */ bt->parent_dmat,
/* alignment */ 1,
/* boundary */ 0,
/* lowaddr */ BUS_SPACE_MAXADDR,
/* highaddr */ BUS_SPACE_MAXADDR,
/* filter */ NULL,
/* filterarg */ NULL,
/* maxsize */ bt->max_ccbs *
sizeof(struct scsi_sense_data),
/* nsegments */ 1,
/* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
/* flags */ 0,
/* lockfunc */ busdma_lock_mutex,
/* lockarg */ &Giant,
&bt->sense_dmat) != 0) {
bt_mca_release_resources(dev);
return (ENOMEM);
}
bt->init_level++;
/* Allocation of sense buffers */
if (bus_dmamem_alloc(bt->sense_dmat,
(void **)&bt->sense_buffers,
BUS_DMA_NOWAIT, &bt->sense_dmamap) != 0) {
bt_mca_release_resources(dev);
return (ENOMEM);
}
bt->init_level++;
/* And permanently map them */
bus_dmamap_load(bt->sense_dmat, bt->sense_dmamap,
bt->sense_buffers,
bt->max_ccbs * sizeof(*bt->sense_buffers),
btmapsensebuffers, bt, /*flags*/0);
bt->init_level++;
if ((error = bt_attach(dev))) {
bt_mca_release_resources(dev);
return (error);
}
return (0);
}
/*
* This code should be shared with the ISA
* stubs as its exactly the same.
*/
#define BIOS_MAP_SIZE (16 * 1024)
static int
btvlbouncefilter(void *arg, bus_addr_t addr)
{
struct bt_softc *bt;
bt = (struct bt_softc *)arg;
addr &= BUS_SPACE_MAXADDR_24BIT;
if (addr == 0
|| (addr >= bt->bios_addr
&& addr < (bt->bios_addr + BIOS_MAP_SIZE)))
return (1);
return (0);
}
static void
btmapsensebuffers(void *arg, bus_dma_segment_t *segs, int nseg, int error)
{
struct bt_softc* bt;
bt = (struct bt_softc*)arg;
bt->sense_buffers_physbase = segs->ds_addr;
}
static device_method_t bt_mca_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, bt_mca_probe),
DEVMETHOD(device_attach, bt_mca_attach),
{ 0, 0 }
};
static driver_t bt_mca_driver = {
"bt",
bt_mca_methods,
sizeof(struct bt_softc),
};
static devclass_t bt_devclass;
DRIVER_MODULE(bt, mca, bt_mca_driver, bt_devclass, 0, 0);