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/* $OpenBSD: dma_sbus.c,v 1.16 2008/06/26 05:42:18 ray Exp $ */
/* $NetBSD: dma_sbus.c,v 1.32 2008/04/28 20:23:57 martin Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Paul Kranenburg.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*-
* Copyright (c) 1994 Peter Galbavy. All rights reserved.
* Copyright (c) 2005 Marius Strobl <marius@FreeBSD.org>. 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 ``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 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: release/9.1.0/sys/sparc64/sbus/dma_sbus.c 230699 2012-01-29 00:45:52Z marius $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/rman.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/ofw/openfirm.h>
#include <machine/bus.h>
#include <machine/bus_common.h>
#include <machine/resource.h>
#include <sparc64/sbus/lsi64854reg.h>
#include <sparc64/sbus/lsi64854var.h>
#include <sparc64/sbus/ofw_sbus.h>
#include <sparc64/sbus/sbusreg.h>
#include <sparc64/sbus/sbusvar.h>
struct dma_devinfo {
struct ofw_bus_devinfo ddi_obdinfo;
struct resource_list ddi_rl;
};
struct dma_softc {
struct lsi64854_softc sc_lsi64854; /* base device */
int sc_ign;
int sc_slot;
};
static devclass_t dma_devclass;
static device_probe_t dma_probe;
static device_attach_t dma_attach;
static bus_print_child_t dma_print_child;
static bus_probe_nomatch_t dma_probe_nomatch;
static bus_get_resource_list_t dma_get_resource_list;
static ofw_bus_get_devinfo_t dma_get_devinfo;
static struct dma_devinfo *dma_setup_dinfo(device_t, struct dma_softc *,
phandle_t);
static void dma_destroy_dinfo(struct dma_devinfo *);
static int dma_print_res(struct dma_devinfo *);
static device_method_t dma_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, dma_probe),
DEVMETHOD(device_attach, dma_attach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* Bus interface */
DEVMETHOD(bus_print_child, dma_print_child),
DEVMETHOD(bus_probe_nomatch, dma_probe_nomatch),
DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource),
DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
DEVMETHOD(bus_get_resource_list, dma_get_resource_list),
DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str),
/* ofw_bus interface */
DEVMETHOD(ofw_bus_get_devinfo, dma_get_devinfo),
DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
DEVMETHOD_END
};
static driver_t dma_driver = {
"dma",
dma_methods,
sizeof(struct dma_softc),
};
/*
* The probe order is handled by sbus(4) as we don't want the variants
* with children to be attached earlier than the stand-alone controllers
* in order to generally preserve the OFW device tree order.
*/
EARLY_DRIVER_MODULE(dma, sbus, dma_driver, dma_devclass, 0, 0,
BUS_PASS_DEFAULT);
MODULE_DEPEND(dma, sbus, 1, 1, 1);
MODULE_VERSION(dma, 1);
static int
dma_probe(device_t dev)
{
const char *name;
name = ofw_bus_get_name(dev);
if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0 ||
strcmp(name, "ledma") == 0) {
device_set_desc_copy(dev, name);
return (0);
}
return (ENXIO);
}
static int
dma_attach(device_t dev)
{
struct dma_softc *dsc;
struct lsi64854_softc *lsc;
struct dma_devinfo *ddi;
device_t cdev;
const char *name;
char *cabletype;
uint32_t csr;
phandle_t child, node;
int error, i;
dsc = device_get_softc(dev);
lsc = &dsc->sc_lsi64854;
name = ofw_bus_get_name(dev);
node = ofw_bus_get_node(dev);
dsc->sc_ign = sbus_get_ign(dev);
dsc->sc_slot = sbus_get_slot(dev);
i = 0;
lsc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i,
RF_ACTIVE);
if (lsc->sc_res == NULL) {
device_printf(dev, "cannot allocate resources\n");
return (ENXIO);
}
if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0)
lsc->sc_channel = L64854_CHANNEL_SCSI;
else if (strcmp(name, "ledma") == 0) {
/*
* Check to see which cable type is currently active and
* set the appropriate bit in the ledma csr so that it
* gets used. If we didn't netboot, the PROM won't have
* the "cable-selection" property; default to TP and then
* the user can change it via a "media" option to ifconfig.
*/
csr = L64854_GCSR(lsc);
if ((OF_getprop_alloc(node, "cable-selection", 1,
(void **)&cabletype)) == -1) {
/* assume TP if nothing there */
csr |= E_TP_AUI;
} else {
if (strcmp(cabletype, "aui") == 0)
csr &= ~E_TP_AUI;
else
csr |= E_TP_AUI;
free(cabletype, M_OFWPROP);
}
L64854_SCSR(lsc, csr);
DELAY(20000); /* manual says we need a 20ms delay */
lsc->sc_channel = L64854_CHANNEL_ENET;
} else {
device_printf(dev, "unsupported DMA channel\n");
error = ENXIO;
goto fail_lres;
}
error = bus_dma_tag_create(
bus_get_dma_tag(dev), /* parent */
1, 0, /* alignment, boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
BUS_SPACE_MAXSIZE, /* maxsize */
BUS_SPACE_UNRESTRICTED, /* nsegments */
BUS_SPACE_MAXSIZE, /* maxsegsize */
0, /* flags */
NULL, NULL, /* no locking */
&lsc->sc_parent_dmat);
if (error != 0) {
device_printf(dev, "cannot allocate parent DMA tag\n");
goto fail_lres;
}
i = sbus_get_burstsz(dev);
lsc->sc_burst = (i & SBUS_BURST_32) ? 32 :
(i & SBUS_BURST_16) ? 16 : 0;
lsc->sc_dev = dev;
/* Attach children. */
i = 0;
for (child = OF_child(node); child != 0; child = OF_peer(child)) {
if ((ddi = dma_setup_dinfo(dev, dsc, child)) == NULL)
continue;
if (i != 0) {
device_printf(dev,
"<%s>: only one child per DMA channel supported\n",
ddi->ddi_obdinfo.obd_name);
dma_destroy_dinfo(ddi);
continue;
}
if ((cdev = device_add_child(dev, NULL, -1)) == NULL) {
device_printf(dev, "<%s>: device_add_child failed\n",
ddi->ddi_obdinfo.obd_name);
dma_destroy_dinfo(ddi);
continue;
}
device_set_ivars(cdev, ddi);
i++;
}
return (bus_generic_attach(dev));
fail_lres:
bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(lsc->sc_res),
lsc->sc_res);
return (error);
}
static struct dma_devinfo *
dma_setup_dinfo(device_t dev, struct dma_softc *dsc, phandle_t node)
{
struct dma_devinfo *ddi;
struct sbus_regs *reg;
uint32_t base, iv, *intr;
int i, nreg, nintr, slot, rslot;
ddi = malloc(sizeof(*ddi), M_DEVBUF, M_WAITOK | M_ZERO);
if (ofw_bus_gen_setup_devinfo(&ddi->ddi_obdinfo, node) != 0) {
free(ddi, M_DEVBUF);
return (NULL);
}
resource_list_init(&ddi->ddi_rl);
slot = -1;
nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)®);
if (nreg == -1) {
device_printf(dev, "<%s>: incomplete\n",
ddi->ddi_obdinfo.obd_name);
goto fail;
}
for (i = 0; i < nreg; i++) {
base = reg[i].sbr_offset;
if (SBUS_ABS(base)) {
rslot = SBUS_ABS_TO_SLOT(base);
base = SBUS_ABS_TO_OFFSET(base);
} else
rslot = reg[i].sbr_slot;
if (slot != -1 && slot != rslot) {
device_printf(dev, "<%s>: multiple slots\n",
ddi->ddi_obdinfo.obd_name);
free(reg, M_OFWPROP);
goto fail;
}
slot = rslot;
resource_list_add(&ddi->ddi_rl, SYS_RES_MEMORY, i, base,
base + reg[i].sbr_size, reg[i].sbr_size);
}
free(reg, M_OFWPROP);
if (slot != dsc->sc_slot) {
device_printf(dev, "<%s>: parent and child slot do not match\n",
ddi->ddi_obdinfo.obd_name);
goto fail;
}
/*
* The `interrupts' property contains the SBus interrupt level.
*/
nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intr),
(void **)&intr);
if (nintr != -1) {
for (i = 0; i < nintr; i++) {
iv = intr[i];
/*
* SBus card devices need the slot number encoded into
* the vector as this is generally not done.
*/
if ((iv & INTMAP_OBIO_MASK) == 0)
iv |= slot << 3;
/* Set the IGN as appropriate. */
iv |= dsc->sc_ign << INTMAP_IGN_SHIFT;
resource_list_add(&ddi->ddi_rl, SYS_RES_IRQ, i,
iv, iv, 1);
}
free(intr, M_OFWPROP);
}
return (ddi);
fail:
dma_destroy_dinfo(ddi);
return (NULL);
}
static void
dma_destroy_dinfo(struct dma_devinfo *dinfo)
{
resource_list_free(&dinfo->ddi_rl);
ofw_bus_gen_destroy_devinfo(&dinfo->ddi_obdinfo);
free(dinfo, M_DEVBUF);
}
static int
dma_print_child(device_t dev, device_t child)
{
int rv;
rv = bus_print_child_header(dev, child);
rv += dma_print_res(device_get_ivars(child));
rv += bus_print_child_footer(dev, child);
return (rv);
}
static void
dma_probe_nomatch(device_t dev, device_t child)
{
const char *type;
device_printf(dev, "<%s>", ofw_bus_get_name(child));
dma_print_res(device_get_ivars(child));
type = ofw_bus_get_type(child);
printf(" type %s (no driver attached)\n",
type != NULL ? type : "unknown");
}
static struct resource_list *
dma_get_resource_list(device_t dev, device_t child)
{
struct dma_devinfo *ddi;
ddi = device_get_ivars(child);
return (&ddi->ddi_rl);
}
static const struct ofw_bus_devinfo *
dma_get_devinfo(device_t bus, device_t child)
{
struct dma_devinfo *ddi;
ddi = device_get_ivars(child);
return (&ddi->ddi_obdinfo);
}
static int
dma_print_res(struct dma_devinfo *ddi)
{
int rv;
rv = 0;
rv += resource_list_print_type(&ddi->ddi_rl, "mem", SYS_RES_MEMORY,
"%#lx");
rv += resource_list_print_type(&ddi->ddi_rl, "irq", SYS_RES_IRQ, "%ld");
return (rv);
}