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-rw-r--r--sys/dev/buslogic/bt_mca.c324
1 files changed, 324 insertions, 0 deletions
diff --git a/sys/dev/buslogic/bt_mca.c b/sys/dev/buslogic/bt_mca.c
new file mode 100644
index 0000000..a55aedd
--- /dev/null
+++ b/sys/dev/buslogic/bt_mca.c
@@ -0,0 +1,324 @@
+/*-
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * 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 <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);
+}
+
+static int
+bt_mca_alloc_resources(device_t dev)
+{
+ struct resource * io = NULL;
+ struct resource * irq = NULL;
+ struct resource * drq = NULL;
+ int rid;
+
+ rid = 0;
+ io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
+ 0, ~0, 1, RF_ACTIVE);
+ if (io == NULL)
+ return (ENOMEM);
+
+ if (mca_get_irq(dev) != -1) {
+ rid = 0;
+ irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
+ 0, ~0, 1, RF_ACTIVE);
+ if (irq == NULL)
+ goto bad;
+ } else {
+ irq = 0;
+ }
+
+ if (mca_get_drq(dev) != -1) {
+ rid = 0;
+ drq = bus_alloc_resource(dev, SYS_RES_DRQ, &rid,
+ 0, ~0, 1, RF_ACTIVE);
+ if (drq == NULL)
+ goto bad;
+ } else {
+ drq = 0;
+ }
+
+ 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, RF_ALLOCATED);
+
+ /* And allocate them */
+ bt_mca_alloc_resources(dev);
+
+ 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))) {
+ 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*/BUS_SPACE_UNRESTRICTED,
+ /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
+ /*flags*/0, &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(bt->parent_dmat, /*alignment*/1,
+ /*boundary*/0,
+ /*lowaddr*/BUS_SPACE_MAXADDR,
+ /*highaddr*/BUS_SPACE_MAXADDR,
+ /*filter*/NULL, /*filterarg*/NULL,
+ bt->max_ccbs * sizeof(struct scsi_sense_data),
+ /*nsegments*/1,
+ /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
+ /*flags*/0, &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);
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