SBus-OHCI driver
This commit is contained in:
Romain Dolbeau
197
NetBSD/9.0/usr/src/sys/dev/sbus/ohci_sbus.c
Normal file
197
NetBSD/9.0/usr/src/sys/dev/sbus/ohci_sbus.c
Normal file
@@ -0,0 +1,197 @@
|
||||
/* $NetBSD$ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1998, 2021 The NetBSD Foundation, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Lennart Augustsson (lennart@augustsson.net) at
|
||||
* Carlstedt Research & Technology.
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__KERNEL_RCSID(0, "$NetBSD$");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/device.h>
|
||||
#include <sys/proc.h>
|
||||
#include <sys/queue.h>
|
||||
|
||||
#include <sys/bus.h>
|
||||
|
||||
#include <dev/sbus/sbusvar.h>
|
||||
#include <machine/autoconf.h>
|
||||
|
||||
#include <dev/usb/usb.h>
|
||||
#include <dev/usb/usbdi.h>
|
||||
#include <dev/usb/usbdivar.h>
|
||||
#include <dev/usb/usb_mem.h>
|
||||
|
||||
#include <dev/usb/ohcireg.h>
|
||||
#include <dev/usb/ohcivar.h>
|
||||
|
||||
struct ohci_sbus_softc {
|
||||
ohci_softc_t sc;
|
||||
void *sc_ih;
|
||||
int sc_node;
|
||||
int sc_burst;
|
||||
};
|
||||
|
||||
static int
|
||||
ohci_sbus_match(device_t parent, cfdata_t match, void *aux)
|
||||
{
|
||||
struct sbus_attach_args *sa = (struct sbus_attach_args *)aux;
|
||||
/* generic-ohci is the default name, from device-tree */
|
||||
if (strcmp("generic-ohci", sa->sa_name) == 0)
|
||||
return 1;
|
||||
/* usb is the OFW name, qualified by device-type */
|
||||
const char* type = prom_getpropstring(sa->sa_node, "device-type");
|
||||
if (type != NULL && (strcmp("ohci", type) == 0))
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
ohci_sbus_attach(device_t parent, device_t self, void *aux)
|
||||
{
|
||||
struct ohci_sbus_softc *sc = device_private(self);
|
||||
struct sbus_attach_args *sa = (struct sbus_attach_args *)aux;
|
||||
struct sbus_softc *sbsc = device_private(parent);
|
||||
int sbusburst;
|
||||
|
||||
sc->sc.sc_dev = self;
|
||||
sc->sc.sc_bus.ub_hcpriv = sc;
|
||||
sc->sc.iot = sa->sa_bustag;
|
||||
sc->sc.sc_size = sa->sa_size;
|
||||
|
||||
/* **** SBus specific */
|
||||
sc->sc_node = sa->sa_node;
|
||||
/*
|
||||
* Get transfer burst size from PROM
|
||||
*/
|
||||
sbusburst = sbsc->sc_burst;
|
||||
if (sbusburst == 0)
|
||||
sbusburst = SBUS_BURST_32 - 1; /* 1->16 */
|
||||
sc->sc_burst = prom_getpropint(sc->sc_node, "burst-sizes", -1);
|
||||
if (sc->sc_burst == -1)
|
||||
/* take SBus burst sizes */
|
||||
sc->sc_burst = sbusburst;
|
||||
/* Clamp at parent's burst sizes */
|
||||
sc->sc_burst &= sbusburst;
|
||||
|
||||
if (0) { /* in PCI there's a test for some specific controller */
|
||||
sc->sc.sc_flags = OHCIF_SUPERIO;
|
||||
}
|
||||
|
||||
/* check if memory space access is enabled */
|
||||
/* CHECKME: not needed ? */
|
||||
|
||||
/* Map I/O registers */
|
||||
if (sbus_bus_map(sc->sc.iot, sa->sa_slot, sa->sa_offset, sc->sc.sc_size,
|
||||
BUS_SPACE_MAP_LINEAR, &sc->sc.ioh) != 0) {
|
||||
aprint_error_dev(self, ": cannot map registers\n");
|
||||
return;
|
||||
}
|
||||
|
||||
aprint_normal_dev(self, "nid 0x%x, bustag %p (0x%zx @ 0x%08lx), burst 0x%x (parent 0x%0x)\n",
|
||||
sc->sc_node,
|
||||
sc->sc.iot,
|
||||
(size_t)sc->sc.sc_size,
|
||||
sc->sc.ioh,
|
||||
sc->sc_burst,
|
||||
sbsc->sc_burst);
|
||||
|
||||
/* we're SPECIAL!!! */
|
||||
/* sc->sc.sc_endian = OHCI_BIG_ENDIAN; */
|
||||
|
||||
/* Disable interrupts, so we don't get any spurious ones. */
|
||||
bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE,
|
||||
OHCI_ALL_INTRS);
|
||||
|
||||
sc->sc.sc_bus.ub_dmatag = sa->sa_dmatag;
|
||||
/* sc->sc.sc_bus.ub_dmatag = (void*)((char*)sc->sc.ioh + 0x10000); */
|
||||
|
||||
/* Enable the device. */
|
||||
/* CHECKME: not needed ? */
|
||||
|
||||
/* Map and establish the interrupt. */
|
||||
if (sa->sa_nintr != 0) {
|
||||
sc->sc_ih = bus_intr_establish(sc->sc.iot, sa->sa_pri,
|
||||
IPL_NET, ohci_intr, sc); // checkme: interrupt priority
|
||||
if (sc->sc_ih == NULL) {
|
||||
aprint_error_dev(self, "couldn't establish interrupt (%d)\n", sa->sa_nintr);
|
||||
} else
|
||||
aprint_normal_dev(self, "interrupting at %d / %d / %d\n", sa->sa_nintr, sa->sa_pri, IPL_NET);
|
||||
} else {
|
||||
aprint_error_dev(self, "no interrupt defined in PROM\n");
|
||||
goto fail;
|
||||
}
|
||||
|
||||
int err = ohci_init(&sc->sc);
|
||||
if (err) {
|
||||
aprint_error_dev(self, "init failed, error=%d\n", err);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
if (!pmf_device_register1(self, ohci_suspend, ohci_resume,
|
||||
ohci_shutdown))
|
||||
aprint_error_dev(self, "couldn't establish power handler\n");
|
||||
|
||||
/* Attach usb device. */
|
||||
sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint);
|
||||
return;
|
||||
|
||||
fail:
|
||||
/* should we unmap ? */
|
||||
return;
|
||||
}
|
||||
|
||||
static int
|
||||
ohci_sbus_detach(device_t self, int flags)
|
||||
{
|
||||
struct ohci_sbus_softc *sc = device_private(self);
|
||||
int rv;
|
||||
|
||||
rv = ohci_detach(&sc->sc, flags);
|
||||
if (rv)
|
||||
return rv;
|
||||
|
||||
pmf_device_deregister(self);
|
||||
|
||||
ohci_shutdown(self, flags);
|
||||
|
||||
/* Disable interrupts, so we don't get any spurious ones. */
|
||||
bus_space_write_4(sc->sc.iot, sc->sc.ioh,
|
||||
OHCI_INTERRUPT_DISABLE, OHCI_ALL_INTRS);
|
||||
|
||||
/* can we disestablish the interrupt ? */
|
||||
/* can we unmap the registers ? */
|
||||
return 0;
|
||||
}
|
||||
|
||||
CFATTACH_DECL3_NEW(ohci_sbus, sizeof(struct ohci_sbus_softc),
|
||||
ohci_sbus_match, ohci_sbus_attach, ohci_sbus_detach, ohci_activate, NULL,
|
||||
ohci_childdet, DVF_DETACH_SHUTDOWN);
|
||||
Reference in New Issue
Block a user