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freebsd-dev/sys/powerpc/psim/openpic_iobus.c

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/* -> /*- for license, minor formatting changes
2005-01-07 02:29:27 +00:00
/*-
Make the OpenPic driver bus-independent, with attachments for the MacIO chip and PSIM's IOBus. Bus-specific drivers should use the identify method to attach themselves to nexus so interrupt can be allocated before the h/w is probed. The 'early attach' routine in openpic is used for this stage of boot. When h/w is probed, the openpic can be attached properly. It will enable interrupts allocated prior to this.
2004-01-13 11:24:36 +00:00
* Copyright 2003 by Peter Grehan. 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.
* 3. 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 ``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.
*
*/
/*
* The psim iobus attachment for the OpenPIC interrupt controller.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
Catchup to now-required <sys/module.h> for PowerPC
2004-06-25 13:42:48 +00:00
#include <sys/module.h>
Make the OpenPic driver bus-independent, with attachments for the MacIO chip and PSIM's IOBus. Bus-specific drivers should use the identify method to attach themselves to nexus so interrupt can be allocated before the h/w is probed. The 'early attach' routine in openpic is used for this stage of boot. When h/w is probed, the openpic can be attached properly. It will enable interrupts allocated prior to this.
2004-01-13 11:24:36 +00:00
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <dev/ofw/openfirm.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <machine/intr_machdep.h>
#include <machine/md_var.h>
#include <machine/nexusvar.h>
#include <machine/pio.h>
#include <machine/resource.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <sys/rman.h>
#include <machine/openpicvar.h>
#include <powerpc/psim/iobusvar.h>
#include "pic_if.h"
/*
Revamp the interrupt handling in support of INTR_FILTER. This includes: o Revamp the PIC I/F to only abstract the PIC hardware. The resource handling has been moved to nexus, where it belongs. o Include EOI and MASK+EOI methods to the PIC I/F in support of INTR_FILTER. o With the allocation of interrupt resources and setup of interrupt handlers in the common platform code we can delay talking to the PIC hardware after enumeration of all devices. Introduce a call to powerpc_intr_enable() in configure_final() to achieve that and have powerpc_setup_intr() only program the PIC when !cold. o As a consequence of the above, remove all early_attach() glue from the OpenPIC and Heathrow PIC drivers and have them register themselves when they're found during enumeration. o Decouple the interrupt vector from the interrupt request line. Allocate vectors increasingly so that they can be used for the intrcnt index as well. Extend the Heathrow PIC driver to translate between IRQ and vector. The OpenPIC driver already has the support for vectors in hardware. Approved by: re (blanket)
2007-08-11 19:25:32 +00:00
* PSIM IOBus interface
Make the OpenPic driver bus-independent, with attachments for the MacIO chip and PSIM's IOBus. Bus-specific drivers should use the identify method to attach themselves to nexus so interrupt can be allocated before the h/w is probed. The 'early attach' routine in openpic is used for this stage of boot. When h/w is probed, the openpic can be attached properly. It will enable interrupts allocated prior to this.
2004-01-13 11:24:36 +00:00
*/
static int openpic_iobus_probe(device_t);
Revamp the interrupt handling in support of INTR_FILTER. This includes: o Revamp the PIC I/F to only abstract the PIC hardware. The resource handling has been moved to nexus, where it belongs. o Include EOI and MASK+EOI methods to the PIC I/F in support of INTR_FILTER. o With the allocation of interrupt resources and setup of interrupt handlers in the common platform code we can delay talking to the PIC hardware after enumeration of all devices. Introduce a call to powerpc_intr_enable() in configure_final() to achieve that and have powerpc_setup_intr() only program the PIC when !cold. o As a consequence of the above, remove all early_attach() glue from the OpenPIC and Heathrow PIC drivers and have them register themselves when they're found during enumeration. o Decouple the interrupt vector from the interrupt request line. Allocate vectors increasingly so that they can be used for the intrcnt index as well. Extend the Heathrow PIC driver to translate between IRQ and vector. The OpenPIC driver already has the support for vectors in hardware. Approved by: re (blanket)
2007-08-11 19:25:32 +00:00
static device_method_t openpic_iobus_methods[] = {
Make the OpenPic driver bus-independent, with attachments for the MacIO chip and PSIM's IOBus. Bus-specific drivers should use the identify method to attach themselves to nexus so interrupt can be allocated before the h/w is probed. The 'early attach' routine in openpic is used for this stage of boot. When h/w is probed, the openpic can be attached properly. It will enable interrupts allocated prior to this.
2004-01-13 11:24:36 +00:00
/* Device interface */
Revamp the interrupt handling in support of INTR_FILTER. This includes: o Revamp the PIC I/F to only abstract the PIC hardware. The resource handling has been moved to nexus, where it belongs. o Include EOI and MASK+EOI methods to the PIC I/F in support of INTR_FILTER. o With the allocation of interrupt resources and setup of interrupt handlers in the common platform code we can delay talking to the PIC hardware after enumeration of all devices. Introduce a call to powerpc_intr_enable() in configure_final() to achieve that and have powerpc_setup_intr() only program the PIC when !cold. o As a consequence of the above, remove all early_attach() glue from the OpenPIC and Heathrow PIC drivers and have them register themselves when they're found during enumeration. o Decouple the interrupt vector from the interrupt request line. Allocate vectors increasingly so that they can be used for the intrcnt index as well. Extend the Heathrow PIC driver to translate between IRQ and vector. The OpenPIC driver already has the support for vectors in hardware. Approved by: re (blanket)
2007-08-11 19:25:32 +00:00
DEVMETHOD(device_probe, openpic_iobus_probe),
DEVMETHOD(device_attach, openpic_attach),
Make the OpenPic driver bus-independent, with attachments for the MacIO chip and PSIM's IOBus. Bus-specific drivers should use the identify method to attach themselves to nexus so interrupt can be allocated before the h/w is probed. The 'early attach' routine in openpic is used for this stage of boot. When h/w is probed, the openpic can be attached properly. It will enable interrupts allocated prior to this.
2004-01-13 11:24:36 +00:00
/* PIC interface */
Add support for the BUS_CONFIG_INTR() method to the platform and to openpic(4). Make use of it in ocpbus(4). On the MPC85xxCDS, IRQ0:4 are active-low.
2008-03-07 22:08:43 +00:00
DEVMETHOD(pic_config, openpic_config),
Revamp the interrupt handling in support of INTR_FILTER. This includes: o Revamp the PIC I/F to only abstract the PIC hardware. The resource handling has been moved to nexus, where it belongs. o Include EOI and MASK+EOI methods to the PIC I/F in support of INTR_FILTER. o With the allocation of interrupt resources and setup of interrupt handlers in the common platform code we can delay talking to the PIC hardware after enumeration of all devices. Introduce a call to powerpc_intr_enable() in configure_final() to achieve that and have powerpc_setup_intr() only program the PIC when !cold. o As a consequence of the above, remove all early_attach() glue from the OpenPIC and Heathrow PIC drivers and have them register themselves when they're found during enumeration. o Decouple the interrupt vector from the interrupt request line. Allocate vectors increasingly so that they can be used for the intrcnt index as well. Extend the Heathrow PIC driver to translate between IRQ and vector. The OpenPIC driver already has the support for vectors in hardware. Approved by: re (blanket)
2007-08-11 19:25:32 +00:00
DEVMETHOD(pic_dispatch, openpic_dispatch),
DEVMETHOD(pic_enable, openpic_enable),
DEVMETHOD(pic_eoi, openpic_eoi),
Add PIC support for IPIs. When registering an interrupt handler, the PIC also informs the platform at which IRQ level it can start assigning IPIs, since this can depend on the number of IRQs supported for external interrupts.
2008-02-12 18:14:46 +00:00
DEVMETHOD(pic_ipi, openpic_ipi),
Revamp the interrupt handling in support of INTR_FILTER. This includes: o Revamp the PIC I/F to only abstract the PIC hardware. The resource handling has been moved to nexus, where it belongs. o Include EOI and MASK+EOI methods to the PIC I/F in support of INTR_FILTER. o With the allocation of interrupt resources and setup of interrupt handlers in the common platform code we can delay talking to the PIC hardware after enumeration of all devices. Introduce a call to powerpc_intr_enable() in configure_final() to achieve that and have powerpc_setup_intr() only program the PIC when !cold. o As a consequence of the above, remove all early_attach() glue from the OpenPIC and Heathrow PIC drivers and have them register themselves when they're found during enumeration. o Decouple the interrupt vector from the interrupt request line. Allocate vectors increasingly so that they can be used for the intrcnt index as well. Extend the Heathrow PIC driver to translate between IRQ and vector. The OpenPIC driver already has the support for vectors in hardware. Approved by: re (blanket)
2007-08-11 19:25:32 +00:00
DEVMETHOD(pic_mask, openpic_mask),
DEVMETHOD(pic_unmask, openpic_unmask),
Make the OpenPic driver bus-independent, with attachments for the MacIO chip and PSIM's IOBus. Bus-specific drivers should use the identify method to attach themselves to nexus so interrupt can be allocated before the h/w is probed. The 'early attach' routine in openpic is used for this stage of boot. When h/w is probed, the openpic can be attached properly. It will enable interrupts allocated prior to this.
2004-01-13 11:24:36 +00:00
{ 0, 0 }
};
static driver_t openpic_iobus_driver = {
Revamp the interrupt handling in support of INTR_FILTER. This includes: o Revamp the PIC I/F to only abstract the PIC hardware. The resource handling has been moved to nexus, where it belongs. o Include EOI and MASK+EOI methods to the PIC I/F in support of INTR_FILTER. o With the allocation of interrupt resources and setup of interrupt handlers in the common platform code we can delay talking to the PIC hardware after enumeration of all devices. Introduce a call to powerpc_intr_enable() in configure_final() to achieve that and have powerpc_setup_intr() only program the PIC when !cold. o As a consequence of the above, remove all early_attach() glue from the OpenPIC and Heathrow PIC drivers and have them register themselves when they're found during enumeration. o Decouple the interrupt vector from the interrupt request line. Allocate vectors increasingly so that they can be used for the intrcnt index as well. Extend the Heathrow PIC driver to translate between IRQ and vector. The OpenPIC driver already has the support for vectors in hardware. Approved by: re (blanket)
2007-08-11 19:25:32 +00:00
"openpic",
Make the OpenPic driver bus-independent, with attachments for the MacIO chip and PSIM's IOBus. Bus-specific drivers should use the identify method to attach themselves to nexus so interrupt can be allocated before the h/w is probed. The 'early attach' routine in openpic is used for this stage of boot. When h/w is probed, the openpic can be attached properly. It will enable interrupts allocated prior to this.
2004-01-13 11:24:36 +00:00
openpic_iobus_methods,
Revamp the interrupt handling in support of INTR_FILTER. This includes: o Revamp the PIC I/F to only abstract the PIC hardware. The resource handling has been moved to nexus, where it belongs. o Include EOI and MASK+EOI methods to the PIC I/F in support of INTR_FILTER. o With the allocation of interrupt resources and setup of interrupt handlers in the common platform code we can delay talking to the PIC hardware after enumeration of all devices. Introduce a call to powerpc_intr_enable() in configure_final() to achieve that and have powerpc_setup_intr() only program the PIC when !cold. o As a consequence of the above, remove all early_attach() glue from the OpenPIC and Heathrow PIC drivers and have them register themselves when they're found during enumeration. o Decouple the interrupt vector from the interrupt request line. Allocate vectors increasingly so that they can be used for the intrcnt index as well. Extend the Heathrow PIC driver to translate between IRQ and vector. The OpenPIC driver already has the support for vectors in hardware. Approved by: re (blanket)
2007-08-11 19:25:32 +00:00
sizeof(struct openpic_softc)
Make the OpenPic driver bus-independent, with attachments for the MacIO chip and PSIM's IOBus. Bus-specific drivers should use the identify method to attach themselves to nexus so interrupt can be allocated before the h/w is probed. The 'early attach' routine in openpic is used for this stage of boot. When h/w is probed, the openpic can be attached properly. It will enable interrupts allocated prior to this.
2004-01-13 11:24:36 +00:00
};
Revamp the interrupt handling in support of INTR_FILTER. This includes: o Revamp the PIC I/F to only abstract the PIC hardware. The resource handling has been moved to nexus, where it belongs. o Include EOI and MASK+EOI methods to the PIC I/F in support of INTR_FILTER. o With the allocation of interrupt resources and setup of interrupt handlers in the common platform code we can delay talking to the PIC hardware after enumeration of all devices. Introduce a call to powerpc_intr_enable() in configure_final() to achieve that and have powerpc_setup_intr() only program the PIC when !cold. o As a consequence of the above, remove all early_attach() glue from the OpenPIC and Heathrow PIC drivers and have them register themselves when they're found during enumeration. o Decouple the interrupt vector from the interrupt request line. Allocate vectors increasingly so that they can be used for the intrcnt index as well. Extend the Heathrow PIC driver to translate between IRQ and vector. The OpenPIC driver already has the support for vectors in hardware. Approved by: re (blanket)
2007-08-11 19:25:32 +00:00
DRIVER_MODULE(openpic, iobus, openpic_iobus_driver, openpic_devclass, 0, 0);
Make the OpenPic driver bus-independent, with attachments for the MacIO chip and PSIM's IOBus. Bus-specific drivers should use the identify method to attach themselves to nexus so interrupt can be allocated before the h/w is probed. The 'early attach' routine in openpic is used for this stage of boot. When h/w is probed, the openpic can be attached properly. It will enable interrupts allocated prior to this.
2004-01-13 11:24:36 +00:00
static int
openpic_iobus_probe(device_t dev)
{
char *name;
name = iobus_get_name(dev);
if (strcmp(name, "interrupt-controller") != 0)
Revamp the interrupt handling in support of INTR_FILTER. This includes: o Revamp the PIC I/F to only abstract the PIC hardware. The resource handling has been moved to nexus, where it belongs. o Include EOI and MASK+EOI methods to the PIC I/F in support of INTR_FILTER. o With the allocation of interrupt resources and setup of interrupt handlers in the common platform code we can delay talking to the PIC hardware after enumeration of all devices. Introduce a call to powerpc_intr_enable() in configure_final() to achieve that and have powerpc_setup_intr() only program the PIC when !cold. o As a consequence of the above, remove all early_attach() glue from the OpenPIC and Heathrow PIC drivers and have them register themselves when they're found during enumeration. o Decouple the interrupt vector from the interrupt request line. Allocate vectors increasingly so that they can be used for the intrcnt index as well. Extend the Heathrow PIC driver to translate between IRQ and vector. The OpenPIC driver already has the support for vectors in hardware. Approved by: re (blanket)
2007-08-11 19:25:32 +00:00
return (ENXIO);
Make the OpenPic driver bus-independent, with attachments for the MacIO chip and PSIM's IOBus. Bus-specific drivers should use the identify method to attach themselves to nexus so interrupt can be allocated before the h/w is probed. The 'early attach' routine in openpic is used for this stage of boot. When h/w is probed, the openpic can be attached properly. It will enable interrupts allocated prior to this.
2004-01-13 11:24:36 +00:00
/*
* The description was already printed out in the nexus
* probe, so don't do it again here
*/
Revamp the interrupt handling in support of INTR_FILTER. This includes: o Revamp the PIC I/F to only abstract the PIC hardware. The resource handling has been moved to nexus, where it belongs. o Include EOI and MASK+EOI methods to the PIC I/F in support of INTR_FILTER. o With the allocation of interrupt resources and setup of interrupt handlers in the common platform code we can delay talking to the PIC hardware after enumeration of all devices. Introduce a call to powerpc_intr_enable() in configure_final() to achieve that and have powerpc_setup_intr() only program the PIC when !cold. o As a consequence of the above, remove all early_attach() glue from the OpenPIC and Heathrow PIC drivers and have them register themselves when they're found during enumeration. o Decouple the interrupt vector from the interrupt request line. Allocate vectors increasingly so that they can be used for the intrcnt index as well. Extend the Heathrow PIC driver to translate between IRQ and vector. The OpenPIC driver already has the support for vectors in hardware. Approved by: re (blanket)
2007-08-11 19:25:32 +00:00
device_set_desc(dev, OPENPIC_DEVSTR);
Make the OpenPic driver bus-independent, with attachments for the MacIO chip and PSIM's IOBus. Bus-specific drivers should use the identify method to attach themselves to nexus so interrupt can be allocated before the h/w is probed. The 'early attach' routine in openpic is used for this stage of boot. When h/w is probed, the openpic can be attached properly. It will enable interrupts allocated prior to this.
2004-01-13 11:24:36 +00:00
return (0);
}
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